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Copy patharrays.js
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67 lines (57 loc) · 1.49 KB
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// learn.javascript.ru saytidagi massivlar mavzusiga bag'ishlangan darsning masalalar yechimi
//1-masala javobi:
alert(goods[goods.length-1]);
//2-masala javobi:
goods.push("kompyuter");
//3-masala javobi:
varstyles=["Jaz","Blues"];
styles.push("Rock-n-Roll");
styles[styles.length-2]="Classic";
alert(styles.shift());
styles.unshift("Rap","Reggy");
//4-masala javobi:
vararr=["ßáëîêî","Àïåëüñèí","Ãðóøà","Ëèìîí"];
varmax=arr.length-1;
varrand=Math.floor(Math.random()*(max+1));
alert(arr[rand]);
//5-masala javobi:
while(true){
varelem=prompt("raqamni kiriting",0);
if(elem==""||elem===null||isNaN(elem))break;
vararr.push(elem);
}
varsum=0;
for(vari=0;i<arr.length;i++)
sum+=arr[i];
alert(sum);
//5-masala shunchaki savol bo'lgani uchun kommentariyda javob yozaman
//keltirilgan kod ishga tushsa 1-alert 1, 2-alert esa 5 ni chiqaradi
//chunki 2-massiv 1-massivni o'zlashtirib, 0-elementga 5 raqamini kirityapti
//6-masala javobi:
functionfind(arr[],value){
for(vari=0;i<arr.length;i++)
if(arr[i]==value)
returni;
return-1;
}
//7-masala javobi:
functionfilterRange(arr,a,b){
for(vari=a;i<=b;i++)
varfilter.push(arr[i]);
returnfilter;
}
//8-masala javobi:
functionresheto(n){
for(vari=2;i<n;i++)
vararr.push(i);
for(i=0;i<arr.length;i++){
varp=arr[i];
if(p*p<n)
for(vari=2;i<arr.length;i++)
arr[i*p]=0;
}
varsum=0;
for(i=0;i<n;i++)
sum+=arr[i];
returnsum;
}