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Eric's Advent of Code Solutions

Introduction

I first learned about Advent of Code in 2020, and I absolutely fell in love with the event. For me, AoC has proven to be a really excellent tool for learning/practicing a new programming language. To date, I have used AoC to learn both Rust and Julia. I'll probably continue this trend in subsequent years as well. I've blogged my approaches to the 2020 puzzles in R and the 2021 puzzles in Julia. During early 2021, I re-solved all the puzzles in Rust. Each blog post includes not only the code but some commentary on the thinking behind the approach and my thoughts about the puzzles in general.

After solving the 2021 puzzles in Julia, I decided that I'd like to collect all 350 (as of 2021) stars from past years. Thus began an ~5 month journey of working on old AoC puzzles on and off in whatever free time I could scrounge up (from other, honestly more important things like spending time with family). The legacy repo contains all the Julia code I wrote to earn those stars! I can't imagine that I'll try to blog about these, since (a) these are old puzzles and not likely to be as interesting to others and (b) that's a lot of work!

This Repo

This repo is just a shell for each year's AoC repositories. I've opted (at least for now) to include each as a submodule here, giving me a lot of flexibility to set up and use other languages for future years, because I probably will. This way, I can have one repo per year (notwithstanding the legacy years) and link them all here.

How's It Going?

I'm all caught up! (As of 2022, at least)

image

About

Parent repository for all my Advent of Code puzzle solutions

Topics

Resources

Stars

0 stars

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1 watching

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Contributors

, '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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Eric's Advent of Code Solutions

Introduction

I first learned about Advent of Code in 2020, and I absolutely fell in love with the event. For me, AoC has proven to be a really excellent tool for learning/practicing a new programming language. To date, I have used AoC to learn both Rust and Julia. I'll probably continue this trend in subsequent years as well. I've blogged my approaches to the 2020 puzzles in R and the 2021 puzzles in Julia. During early 2021, I re-solved all the puzzles in Rust. Each blog post includes not only the code but some commentary on the thinking behind the approach and my thoughts about the puzzles in general.

After solving the 2021 puzzles in Julia, I decided that I'd like to collect all 350 (as of 2021) stars from past years. Thus began an ~5 month journey of working on old AoC puzzles on and off in whatever free time I could scrounge up (from other, honestly more important things like spending time with family). The legacy repo contains all the Julia code I wrote to earn those stars! I can't imagine that I'll try to blog about these, since (a) these are old puzzles and not likely to be as interesting to others and (b) that's a lot of work!

This Repo

This repo is just a shell for each year's AoC repositories. I've opted (at least for now) to include each as a submodule here, giving me a lot of flexibility to set up and use other languages for future years, because I probably will. This way, I can have one repo per year (notwithstanding the legacy years) and link them all here.

How's It Going?

I'm all caught up! (As of 2022, at least)

image

About

Parent repository for all my Advent of Code puzzle solutions

Topics

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Contributors

, '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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Eric's Advent of Code Solutions

Introduction

I first learned about Advent of Code in 2020, and I absolutely fell in love with the event. For me, AoC has proven to be a really excellent tool for learning/practicing a new programming language. To date, I have used AoC to learn both Rust and Julia. I'll probably continue this trend in subsequent years as well. I've blogged my approaches to the 2020 puzzles in R and the 2021 puzzles in Julia. During early 2021, I re-solved all the puzzles in Rust. Each blog post includes not only the code but some commentary on the thinking behind the approach and my thoughts about the puzzles in general.

After solving the 2021 puzzles in Julia, I decided that I'd like to collect all 350 (as of 2021) stars from past years. Thus began an ~5 month journey of working on old AoC puzzles on and off in whatever free time I could scrounge up (from other, honestly more important things like spending time with family). The legacy repo contains all the Julia code I wrote to earn those stars! I can't imagine that I'll try to blog about these, since (a) these are old puzzles and not likely to be as interesting to others and (b) that's a lot of work!

This Repo

This repo is just a shell for each year's AoC repositories. I've opted (at least for now) to include each as a submodule here, giving me a lot of flexibility to set up and use other languages for future years, because I probably will. This way, I can have one repo per year (notwithstanding the legacy years) and link them all here.

How's It Going?

I'm all caught up! (As of 2022, at least)

image

About

Parent repository for all my Advent of Code puzzle solutions

Topics

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Contributors

, '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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Eric's Advent of Code Solutions

Introduction

I first learned about Advent of Code in 2020, and I absolutely fell in love with the event. For me, AoC has proven to be a really excellent tool for learning/practicing a new programming language. To date, I have used AoC to learn both Rust and Julia. I'll probably continue this trend in subsequent years as well. I've blogged my approaches to the 2020 puzzles in R and the 2021 puzzles in Julia. During early 2021, I re-solved all the puzzles in Rust. Each blog post includes not only the code but some commentary on the thinking behind the approach and my thoughts about the puzzles in general.

After solving the 2021 puzzles in Julia, I decided that I'd like to collect all 350 (as of 2021) stars from past years. Thus began an ~5 month journey of working on old AoC puzzles on and off in whatever free time I could scrounge up (from other, honestly more important things like spending time with family). The legacy repo contains all the Julia code I wrote to earn those stars! I can't imagine that I'll try to blog about these, since (a) these are old puzzles and not likely to be as interesting to others and (b) that's a lot of work!

This Repo

This repo is just a shell for each year's AoC repositories. I've opted (at least for now) to include each as a submodule here, giving me a lot of flexibility to set up and use other languages for future years, because I probably will. This way, I can have one repo per year (notwithstanding the legacy years) and link them all here.

How's It Going?

I'm all caught up! (As of 2022, at least)

image

About

Parent repository for all my Advent of Code puzzle solutions

Topics

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Contributors

, '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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Eric's Advent of Code Solutions

Introduction

I first learned about Advent of Code in 2020, and I absolutely fell in love with the event. For me, AoC has proven to be a really excellent tool for learning/practicing a new programming language. To date, I have used AoC to learn both Rust and Julia. I'll probably continue this trend in subsequent years as well. I've blogged my approaches to the 2020 puzzles in R and the 2021 puzzles in Julia. During early 2021, I re-solved all the puzzles in Rust. Each blog post includes not only the code but some commentary on the thinking behind the approach and my thoughts about the puzzles in general.

After solving the 2021 puzzles in Julia, I decided that I'd like to collect all 350 (as of 2021) stars from past years. Thus began an ~5 month journey of working on old AoC puzzles on and off in whatever free time I could scrounge up (from other, honestly more important things like spending time with family). The legacy repo contains all the Julia code I wrote to earn those stars! I can't imagine that I'll try to blog about these, since (a) these are old puzzles and not likely to be as interesting to others and (b) that's a lot of work!

This Repo

This repo is just a shell for each year's AoC repositories. I've opted (at least for now) to include each as a submodule here, giving me a lot of flexibility to set up and use other languages for future years, because I probably will. This way, I can have one repo per year (notwithstanding the legacy years) and link them all here.

How's It Going?

I'm all caught up! (As of 2022, at least)

image

About

Parent repository for all my Advent of Code puzzle solutions

Topics

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Contributors

, '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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Eric's Advent of Code Solutions

Introduction

I first learned about Advent of Code in 2020, and I absolutely fell in love with the event. For me, AoC has proven to be a really excellent tool for learning/practicing a new programming language. To date, I have used AoC to learn both Rust and Julia. I'll probably continue this trend in subsequent years as well. I've blogged my approaches to the 2020 puzzles in R and the 2021 puzzles in Julia. During early 2021, I re-solved all the puzzles in Rust. Each blog post includes not only the code but some commentary on the thinking behind the approach and my thoughts about the puzzles in general.

After solving the 2021 puzzles in Julia, I decided that I'd like to collect all 350 (as of 2021) stars from past years. Thus began an ~5 month journey of working on old AoC puzzles on and off in whatever free time I could scrounge up (from other, honestly more important things like spending time with family). The legacy repo contains all the Julia code I wrote to earn those stars! I can't imagine that I'll try to blog about these, since (a) these are old puzzles and not likely to be as interesting to others and (b) that's a lot of work!

This Repo

This repo is just a shell for each year's AoC repositories. I've opted (at least for now) to include each as a submodule here, giving me a lot of flexibility to set up and use other languages for future years, because I probably will. This way, I can have one repo per year (notwithstanding the legacy years) and link them all here.

How's It Going?

I'm all caught up! (As of 2022, at least)

image

About

Parent repository for all my Advent of Code puzzle solutions

Topics

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Contributors

, '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('^' + ".*" + '
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Eric's Advent of Code Solutions

Introduction

I first learned about Advent of Code in 2020, and I absolutely fell in love with the event. For me, AoC has proven to be a really excellent tool for learning/practicing a new programming language. To date, I have used AoC to learn both Rust and Julia. I'll probably continue this trend in subsequent years as well. I've blogged my approaches to the 2020 puzzles in R and the 2021 puzzles in Julia. During early 2021, I re-solved all the puzzles in Rust. Each blog post includes not only the code but some commentary on the thinking behind the approach and my thoughts about the puzzles in general.

After solving the 2021 puzzles in Julia, I decided that I'd like to collect all 350 (as of 2021) stars from past years. Thus began an ~5 month journey of working on old AoC puzzles on and off in whatever free time I could scrounge up (from other, honestly more important things like spending time with family). The legacy repo contains all the Julia code I wrote to earn those stars! I can't imagine that I'll try to blog about these, since (a) these are old puzzles and not likely to be as interesting to others and (b) that's a lot of work!

This Repo

This repo is just a shell for each year's AoC repositories. I've opted (at least for now) to include each as a submodule here, giving me a lot of flexibility to set up and use other languages for future years, because I probably will. This way, I can have one repo per year (notwithstanding the legacy years) and link them all here.

How's It Going?

I'm all caught up! (As of 2022, at least)

image

About

Parent repository for all my Advent of Code puzzle solutions

Topics

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Contributors

, '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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Eric's Advent of Code Solutions

Introduction

I first learned about Advent of Code in 2020, and I absolutely fell in love with the event. For me, AoC has proven to be a really excellent tool for learning/practicing a new programming language. To date, I have used AoC to learn both Rust and Julia. I'll probably continue this trend in subsequent years as well. I've blogged my approaches to the 2020 puzzles in R and the 2021 puzzles in Julia. During early 2021, I re-solved all the puzzles in Rust. Each blog post includes not only the code but some commentary on the thinking behind the approach and my thoughts about the puzzles in general.

After solving the 2021 puzzles in Julia, I decided that I'd like to collect all 350 (as of 2021) stars from past years. Thus began an ~5 month journey of working on old AoC puzzles on and off in whatever free time I could scrounge up (from other, honestly more important things like spending time with family). The legacy repo contains all the Julia code I wrote to earn those stars! I can't imagine that I'll try to blog about these, since (a) these are old puzzles and not likely to be as interesting to others and (b) that's a lot of work!

This Repo

This repo is just a shell for each year's AoC repositories. I've opted (at least for now) to include each as a submodule here, giving me a lot of flexibility to set up and use other languages for future years, because I probably will. This way, I can have one repo per year (notwithstanding the legacy years) and link them all here.

How's It Going?

I'm all caught up! (As of 2022, at least)

image

About

Parent repository for all my Advent of Code puzzle solutions

Topics

Resources

Stars

0 stars

Watchers

1 watching

Forks

Releases

Packages

Contributors