如何实现数组的随机排序?
方法一:
var arr = [1,2,3,4,5,6,7,8,9,10]; function randSort1(arr){ for(var i = 0,len = arr.length;i < len; i++ ){ var rand = parseInt(Math.random()*len); var temp = arr[rand]; arr[rand] = arr[i]; arr[i] = temp; } return arr; } console.log(randSort1(arr));
方法二:
var arr = [1,2,3,4,5,6,7,8,9,10];
function randSort2(arr){
var mixedArray = [];
while(arr.length > 0){
var randomIndex = parseInt(Math.random()*arr.length);
mixedArray.push(arr[randomIndex]);
arr.splice(randomIndex, 1);
} return mixedArray;
}
console.log(randSort2(arr));
方法三:
var arr = [1,2,3,4,5,6,7,8,9,10]; arr.sort(function(){ return Math.random() - 0.5; }) console.log(arr);