JS数组排序技巧汇总(冒泡、sort、快速、希尔等排序)

 bubbleSort:function(array){ var i = 0, len = array.length, j, d; for(; i

 systemSort:function(array) { return array.sort(function(a, b) { return a - b; }); } 

 quickSort:function(array) { //var array = [8,4,6,2,7,9,3,5,74,5]; //var array = [0,1,2,44,4,324,5,65,6,6,34,4,5,6,2,43,5,6,62,43,5,1,4,51,56,76,7,7,2,1,45,4,6,7]; var i = 0; var j = array.length - 1; var Sort = function(i, j){ // 结束条件 if(i == j ){ return }; var key = array[i]; var tempi = i; // 记录开始位置 var tempj = j; // 记录结束位置 while(j > i){ // j <<-------------- 向前查找 if(array[j] >= key){ j--; } else{ array[i] = array[j] //i++ ------------>>向后查找 while(j > ++i){ if(array[i] > key){ array[j] = array[i]; break; } } } } // 如果第一个取出的 key 是最小的数 if(tempi == i){ Sort(++i, tempj); return ; } // 最后一个空位留给 key array[i] = key; // 递归 Sort(tempi, i); Sort(j, tempj); } Sort(i, j); return array; } 

 //Jun.array.shellSort(Jun.array.df(10000)); shellSort:function(array){ // var array = [13,14,94,33,82,25,59,94,65,23,45,27,73,25,39,10]; var tempArr = [1750, 701, 301, 132, 57, 23, 10, 4, 1]; // reverse() 在维基上看到这个最优的步长 较小数组 //var tempArr = [1031612713, 217378076, 45806244, 9651787, 2034035, 428481, 90358, 19001, 4025, 836, 182, 34, 9, 1] //针对大数组的步长选择 var i = 0; var tempArrtempArrLength = tempArr.length; var len = array.length; var len2 = parseInt(len/2); for(;i  len2){ continue; } tempSort(tempArr[i]); } // 排序一个步长 function tempSort(temp){ //console.log(temp) 使用的步长统计 var i = 0, j = 0, f, tem, key; var tempLen = len%temp > 0 ? parseInt(len/temp) + 1 : len/temp; for(;i = 0){ // 依次向上查找 if(array[tem] > key){ array[tem+temp] = array[tem]; }else{ break; } } array[tem + temp ] = key; } } } return array; } 

 insertSort:function(array){ / /var array = [0,1,2,44,4,324,5,65,6,6,34,4,5,6,2,43,5,6,62,43,5,1,4,51,56,76,7,7,2,1,45,4,6,7]; var i = 1, j, temp, key, len = array.length; for(; i  -1){ if(array[j] > key){ array[j+1] = array[j]; }else{ break; } } array[j+1] = key; } return array; } 

 var arrDemo = new Array(); arrDemo[0] = 10; arrDemo[1] = 50; arrDemo[2] = 51; arrDemo[3] = 100; arrDemo.sort(); //调用sort方法后，数组本身会被改变，即影响原数组 alert(arrDemo);//10,100,50,51 默认情况下sort方法是按ascii字母顺序排序的，而非我们认为是按数字大小排序 arrDemo.sort(function(a,b){return a>b?1:-1});//从小到大排序 alert(arrDemo);//10,50,51,100 arrDemo.sort(function(a,b){return a