C#选择法排序实例分析

public int[] SelectionSort(int[] arr){  //1. Find min  //2. Swap it with first element  //3. Repeat starting from secong position onwards.  int _min = 0;  for (int i = 0; i < arr.Length; i++)  {    _min = i;    for (int j = i; j < arr.Length; j++)    {      if (arr[j] < arr[_min])        _min = j;    }    int _temp = arr[i];    arr[i] = arr[_min];    arr[_min] = _temp;  }  return arr;}