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Jane Doe Banner

HackerRank

HackerRank is a technology company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. HackerRank's programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, and JavaScript) and span multiple computer science domains.


Purpose of This Repository

This repository is created to store and manage solutions that have been completed on the HackerRank platform. The primary objectives of this repository are:

  • Sharing Knowledge: To provide a learning resource for both novice and experienced programmers.
  • Personal Documentation: To track progress in solving programming problems.
  • Collaboration: To enable users to contribute, provide feedback, or improve existing solutions.
  • Quick Reference: To provide a place to find solutions to similar problems.

Table of Contents

Prepare

NoLanguagesLink
1RubyIntroduction
Arrays & Hashes
Enumerables
Methods
Strings
2PythonIntroduction
Basic Data Types
Strings
Sets
Math
Itertools
Collections
Date and Time
Errors and Exceptions
Classes
Built-Ins
Python Functionals
Regex and Parsing
XML
Closures and Decorators
Numpy
Debugging
3CIntroduction
Conditionals and Loops
Arrays and Strings
Functions
Structs and Enums
4C++Introduction
Strings
Classes
STL
Inheritance
Debugging
Other Concepts
5Linux ShellBash
Text Processing
Arrays in Bash
Grep Sed Awk
6Problem SolvingWarmup
Implementation

About

Hacker Rank Solve (On Going)

Topics

ccppcsharpgohackerrankhackerrank-challengeshackerrank-pythonhackerrank-solutionhaskellhtmljavajavascriptkotlinphppythonrubysolverswifttypescriptvscode

Resources

Readme
Activity

Stars

6 stars

Watchers

1 watching

Forks

0 forks
Report repository

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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README.md
README.md
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Jane Doe Banner
HackerRank
HackerRank is a technology company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. HackerRank's programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, and JavaScript) and span multiple computer science domains.

Purpose of This Repository
This repository is created to store and manage solutions that have been completed on the HackerRank platform. The primary objectives of this repository are:
  • Sharing Knowledge: To provide a learning resource for both novice and experienced programmers.
  • Personal Documentation: To track progress in solving programming problems.
  • Collaboration: To enable users to contribute, provide feedback, or improve existing solutions.
  • Quick Reference: To provide a place to find solutions to similar problems.

Table of Contents
Prepare
NoLanguagesLink
1RubyIntroduction
Arrays & Hashes
Enumerables
Methods
Strings
2PythonIntroduction
Basic Data Types
Strings
Sets
Math
Itertools
Collections
Date and Time
Errors and Exceptions
Classes
Built-Ins
Python Functionals
Regex and Parsing
XML
Closures and Decorators
Numpy
Debugging
3CIntroduction
Conditionals and Loops
Arrays and Strings
Functions
Structs and Enums
4C++Introduction
Strings
Classes
STL
Inheritance
Debugging
Other Concepts
5Linux ShellBash
Text Processing
Arrays in Bash
Grep Sed Awk
6Problem SolvingWarmup
Implementation

About
Hacker Rank Solve (On Going)
Topics
ccppcsharpgohackerrankhackerrank-challengeshackerrank-pythonhackerrank-solutionhaskellhtmljavajavascriptkotlinphppythonrubysolverswifttypescriptvscode
Resources
Readme
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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This repository was archived by the owner on Jul 4, 2026. It is now read-only.

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NameName
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README.md
README.md
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Jane Doe Banner
HackerRank
HackerRank is a technology company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. HackerRank's programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, and JavaScript) and span multiple computer science domains.

Purpose of This Repository
This repository is created to store and manage solutions that have been completed on the HackerRank platform. The primary objectives of this repository are:
  • Sharing Knowledge: To provide a learning resource for both novice and experienced programmers.
  • Personal Documentation: To track progress in solving programming problems.
  • Collaboration: To enable users to contribute, provide feedback, or improve existing solutions.
  • Quick Reference: To provide a place to find solutions to similar problems.

Table of Contents
Prepare
NoLanguagesLink
1RubyIntroduction
Arrays & Hashes
Enumerables
Methods
Strings
2PythonIntroduction
Basic Data Types
Strings
Sets
Math
Itertools
Collections
Date and Time
Errors and Exceptions
Classes
Built-Ins
Python Functionals
Regex and Parsing
XML
Closures and Decorators
Numpy
Debugging
3CIntroduction
Conditionals and Loops
Arrays and Strings
Functions
Structs and Enums
4C++Introduction
Strings
Classes
STL
Inheritance
Debugging
Other Concepts
5Linux ShellBash
Text Processing
Arrays in Bash
Grep Sed Awk
6Problem SolvingWarmup
Implementation

About
Hacker Rank Solve (On Going)
Topics
ccppcsharpgohackerrankhackerrank-challengeshackerrank-pythonhackerrank-solutionhaskellhtmljavajavascriptkotlinphppythonrubysolverswifttypescriptvscode
Resources
Readme
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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README.md
README.md
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Jane Doe Banner
HackerRank
HackerRank is a technology company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. HackerRank's programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, and JavaScript) and span multiple computer science domains.

Purpose of This Repository
This repository is created to store and manage solutions that have been completed on the HackerRank platform. The primary objectives of this repository are:
  • Sharing Knowledge: To provide a learning resource for both novice and experienced programmers.
  • Personal Documentation: To track progress in solving programming problems.
  • Collaboration: To enable users to contribute, provide feedback, or improve existing solutions.
  • Quick Reference: To provide a place to find solutions to similar problems.

Table of Contents
Prepare
NoLanguagesLink
1RubyIntroduction
Arrays & Hashes
Enumerables
Methods
Strings
2PythonIntroduction
Basic Data Types
Strings
Sets
Math
Itertools
Collections
Date and Time
Errors and Exceptions
Classes
Built-Ins
Python Functionals
Regex and Parsing
XML
Closures and Decorators
Numpy
Debugging
3CIntroduction
Conditionals and Loops
Arrays and Strings
Functions
Structs and Enums
4C++Introduction
Strings
Classes
STL
Inheritance
Debugging
Other Concepts
5Linux ShellBash
Text Processing
Arrays in Bash
Grep Sed Awk
6Problem SolvingWarmup
Implementation

About
Hacker Rank Solve (On Going)
Topics
ccppcsharpgohackerrankhackerrank-challengeshackerrank-pythonhackerrank-solutionhaskellhtmljavajavascriptkotlinphppythonrubysolverswifttypescriptvscode
Resources
Readme
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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This repository was archived by the owner on Jul 4, 2026. It is now read-only.

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Latest commit
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470 Commits
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NameName
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README.md
README.md
Repository files navigation
Jane Doe Banner
HackerRank
HackerRank is a technology company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. HackerRank's programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, and JavaScript) and span multiple computer science domains.

Purpose of This Repository
This repository is created to store and manage solutions that have been completed on the HackerRank platform. The primary objectives of this repository are:
  • Sharing Knowledge: To provide a learning resource for both novice and experienced programmers.
  • Personal Documentation: To track progress in solving programming problems.
  • Collaboration: To enable users to contribute, provide feedback, or improve existing solutions.
  • Quick Reference: To provide a place to find solutions to similar problems.

Table of Contents
Prepare
NoLanguagesLink
1RubyIntroduction
Arrays & Hashes
Enumerables
Methods
Strings
2PythonIntroduction
Basic Data Types
Strings
Sets
Math
Itertools
Collections
Date and Time
Errors and Exceptions
Classes
Built-Ins
Python Functionals
Regex and Parsing
XML
Closures and Decorators
Numpy
Debugging
3CIntroduction
Conditionals and Loops
Arrays and Strings
Functions
Structs and Enums
4C++Introduction
Strings
Classes
STL
Inheritance
Debugging
Other Concepts
5Linux ShellBash
Text Processing
Arrays in Bash
Grep Sed Awk
6Problem SolvingWarmup
Implementation

About
Hacker Rank Solve (On Going)
Topics
ccppcsharpgohackerrankhackerrank-challengeshackerrank-pythonhackerrank-solutionhaskellhtmljavajavascriptkotlinphppythonrubysolverswifttypescriptvscode
Resources
Readme
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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This repository was archived by the owner on Jul 4, 2026. It is now read-only.

BranchesTags
Latest commit
History
470 Commits
Folders and files
NameName
Last commit message
Last commit date
Prepare
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README.md
README.md
Repository files navigation
Jane Doe Banner
HackerRank
HackerRank is a technology company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. HackerRank's programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, and JavaScript) and span multiple computer science domains.

Purpose of This Repository
This repository is created to store and manage solutions that have been completed on the HackerRank platform. The primary objectives of this repository are:
  • Sharing Knowledge: To provide a learning resource for both novice and experienced programmers.
  • Personal Documentation: To track progress in solving programming problems.
  • Collaboration: To enable users to contribute, provide feedback, or improve existing solutions.
  • Quick Reference: To provide a place to find solutions to similar problems.

Table of Contents
Prepare
NoLanguagesLink
1RubyIntroduction
Arrays & Hashes
Enumerables
Methods
Strings
2PythonIntroduction
Basic Data Types
Strings
Sets
Math
Itertools
Collections
Date and Time
Errors and Exceptions
Classes
Built-Ins
Python Functionals
Regex and Parsing
XML
Closures and Decorators
Numpy
Debugging
3CIntroduction
Conditionals and Loops
Arrays and Strings
Functions
Structs and Enums
4C++Introduction
Strings
Classes
STL
Inheritance
Debugging
Other Concepts
5Linux ShellBash
Text Processing
Arrays in Bash
Grep Sed Awk
6Problem SolvingWarmup
Implementation

About
Hacker Rank Solve (On Going)
Topics
ccppcsharpgohackerrankhackerrank-challengeshackerrank-pythonhackerrank-solutionhaskellhtmljavajavascriptkotlinphppythonrubysolverswifttypescriptvscode
Resources
Readme
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content

This repository was archived by the owner on Jul 4, 2026. It is now read-only.

BranchesTags
Latest commit
History
470 Commits
Folders and files
NameName
Last commit message
Last commit date
Prepare
Prepare
README.md
README.md
Repository files navigation
Jane Doe Banner
HackerRank
HackerRank is a technology company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. HackerRank's programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, and JavaScript) and span multiple computer science domains.

Purpose of This Repository
This repository is created to store and manage solutions that have been completed on the HackerRank platform. The primary objectives of this repository are:
  • Sharing Knowledge: To provide a learning resource for both novice and experienced programmers.
  • Personal Documentation: To track progress in solving programming problems.
  • Collaboration: To enable users to contribute, provide feedback, or improve existing solutions.
  • Quick Reference: To provide a place to find solutions to similar problems.

Table of Contents
Prepare
NoLanguagesLink
1RubyIntroduction
Arrays & Hashes
Enumerables
Methods
Strings
2PythonIntroduction
Basic Data Types
Strings
Sets
Math
Itertools
Collections
Date and Time
Errors and Exceptions
Classes
Built-Ins
Python Functionals
Regex and Parsing
XML
Closures and Decorators
Numpy
Debugging
3CIntroduction
Conditionals and Loops
Arrays and Strings
Functions
Structs and Enums
4C++Introduction
Strings
Classes
STL
Inheritance
Debugging
Other Concepts
5Linux ShellBash
Text Processing
Arrays in Bash
Grep Sed Awk
6Problem SolvingWarmup
Implementation

About
Hacker Rank Solve (On Going)
Topics
ccppcsharpgohackerrankhackerrank-challengeshackerrank-pythonhackerrank-solutionhaskellhtmljavajavascriptkotlinphppythonrubysolverswifttypescriptvscode
Resources
Readme
Activity
Stars
6 stars
Watchers
1 watching
Forks
0 forks
Report repository
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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This repository was archived by the owner on Jul 4, 2026. It is now read-only.

BranchesTags
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NameName
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Last commit date
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Prepare
README.md
README.md
Repository files navigation
Jane Doe Banner
HackerRank
HackerRank is a technology company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. HackerRank's programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, and JavaScript) and span multiple computer science domains.

Purpose of This Repository
This repository is created to store and manage solutions that have been completed on the HackerRank platform. The primary objectives of this repository are:
  • Sharing Knowledge: To provide a learning resource for both novice and experienced programmers.
  • Personal Documentation: To track progress in solving programming problems.
  • Collaboration: To enable users to contribute, provide feedback, or improve existing solutions.
  • Quick Reference: To provide a place to find solutions to similar problems.

Table of Contents
Prepare
NoLanguagesLink
1RubyIntroduction
Arrays & Hashes
Enumerables
Methods
Strings
2PythonIntroduction
Basic Data Types
Strings
Sets
Math
Itertools
Collections
Date and Time
Errors and Exceptions
Classes
Built-Ins
Python Functionals
Regex and Parsing
XML
Closures and Decorators
Numpy
Debugging
3CIntroduction
Conditionals and Loops
Arrays and Strings
Functions
Structs and Enums
4C++Introduction
Strings
Classes
STL
Inheritance
Debugging
Other Concepts
5Linux ShellBash
Text Processing
Arrays in Bash
Grep Sed Awk
6Problem SolvingWarmup
Implementation

About
Hacker Rank Solve (On Going)
Topics
ccppcsharpgohackerrankhackerrank-challengeshackerrank-pythonhackerrank-solutionhaskellhtmljavajavascriptkotlinphppythonrubysolverswifttypescriptvscode
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