首页 > 编程 > JavaScript > 正文

JavaScript中三种常见的排序方法

2019-11-19 17:25:44
字体:
来源:转载
供稿:网友

1、快速排序:

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>快速排序</title></head><body><script> var ary=[21,8,4,32,5]; function quickSort(ary){ if(ary.length<=1){  return ary; } var num=Math.floor(ary.length/2); var numValue=ary.splice(num,1)[0]; var left=[]; var right=[]; for(var i=0; i<ary.length; i++){  var cur=ary[i];  if(cur<numValue){  left.push(cur);  }else{  right.push(cur);  } } return quickSort(left).concat([numValue],quickSort(right)); } document.write(quickSort(ary));</script></body></html>

2、插入排序

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>插入排序</title></head><body><script> var ary=[21,8,4,32,5]; function insertSort(ary){ var left=ary.splice(0,1); for(var i=0; i<ary.length; i++){  var cur=ary[i];  for(var j=left.length-1; j>=0;){  var nex=left[j];  if(cur<nex){   j--;   if(j===-1){   left.unshift(cur);   }  }else{   left.splice(j+1,0,cur);   break;  }  } } return left; } document.write(insertSort(ary));</script></body></html>

3、冒泡排序

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>冒泡排序</title></head><body><script> var ary=[21,32,2,9,4]; function bubbleSort(ary){ for(var i=0; i<ary.length; i++){  for(var j=0; j<ary.length-i-1; j++){  if(ary[j]>ary[j+1]){   var tmp=ary[j+1];   ary[j+1]=ary[j];   ary[j]=tmp;  }  } } return ary; } document.write(bubbleSort(ary));</script></body></html>

以上就是本文的全部内容,希望本文的内容对大家的学习或者工作能带来一定的帮助,同时也希望多多支持武林网!

发表评论 共有条评论
用户名: 密码:
验证码: 匿名发表