数组的二分排序方法:function quickSort (arr) {
12345678910111213141516 if (!Array.isArray(arr) || arr.length == 0) { return []; }; var cIndex = Math.floor(arr.length / 2), c = arr.splice(cIndex,1), l = [], r = []; for (var i = 0; i if (arr[i]这里面的arr[i]
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