//sort排序var testArr1=[3, 44, 38, 5, 47, 15, 36, 26, 27, 2, 46, 4, 19, 50, 48];var testArr2=[3, 44, 38, 5, 47, 15, 36, 26, 27, 2, 46, 4, 19, 50, 48];var testArr3=[3, 44, 38, 5, 47, 15, 36, 26, 27, 2, 46, 4, 19, 50, 48];testArr1.sort();//排序結果：[15, 19, 2, 26, 27, 3, 36, 38, 4, 44, 46, 47, 48, 5, 50]testArr2.sort(function(a,b){return a>b});//排序結果：[2, 3, 4, 5, 15, 19, 26, 27, 36, 38, 44, 46, 47, 48, 50]testArr3.sort(function(a,b){return a-b});//排序結果：[2, 3, 4, 5, 15, 19, 26, 27, 36, 38, 44, 46, 47, 48, 50]

var testArr1=[3, 44, 38, 5, 47, 15, 36, 26, 27, 2, 46, 4, 19, 50, 48];var testArr2=[3, 44, 38, 5, 47, 15, 36, 26, 27, 2, 46, 4, 19, 50, 48];function bubbleSort1(array){  for(i=array.length-1;i>0;i--){    for(j=0;j<i;j++){      if(array[j+1]<array[j]){        var temp=array[j+1];        array[j+1]=array[j];        array[j]=temp;      }    }  }}function bubbleSort2(array){  for(i=array.length-1;i>0;i--){    for(j=0;j<i;j++){      if((array[j+1]-array[j])<0){        var temp=array[j+1];        array[j+1]=array[j];        array[j]=temp;      }    }  }}bubbleSort1(testArr1);//排序結果：[2,3,4,5,15,19,26,27,36,38,44,46,47,48,50]bubbleSort2(testArr2);//排序結果：[2,3,4,5,15,19,26,27,36,38,44,46,47,48,50]

var testArr=[3, 44, 38, 5, 47, 15, 36, 26, 27, 2, 46, 4, 19, 50, 48];function selectSort(array){  for(i=0;i<array.length;i++){     var slc=array[i];//初始時設未排序的第一個值為選中值     var slcIdx;//記錄一次循環后作為選中值的index     for(j=i;j<array.length;j++){        if(array[j]<slc){       slc=array[j];       slcIdx=j;       }     }   if(slc!=test[i]){//如果最后作為選中值的值和初始slc值不相等    var temp=array[i];    array[i]=array[slcIdx];    array[slcIdx]=temp;   }  }}selectSort(testArr);//排序結果是：[2,3,4,5,15,19,26,27,36,38,44,46,47,48,50]

var testArr=[3, 44, 38, 5, 47, 15, 36, 26, 27, 2, 46, 4, 19, 50, 48];function insertSort(array){  for (var i = 0 ; i < array.length-1; i++) {//注意i小于數組的長度-1，否則會造成數組越界，形成死循環    var curElement=array[i+1];    for (var j = i; j >= 0; j--) {      if(curElement<array[j]){        array[j+1]=array[j];        if(j==0){//當j==0時，說明已經排到了數組的最開頭          array[0]=curElement;        }      }else{        array[j+1]=curElement;         break;      }    };  };} insertSort(testArr);//排序結果是:[2,3,4,5,15,19,26,27,36,38,44,46,47,48,50]