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SelectionSort.java

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/**

* 选择排序

*/

public class SelectionSort {

/**

* 选择排序

* 时间复杂度 n^2

* 空间复杂度 1

* @param arr

*/

public static void selectionSort(int[] arr){

int length = arr.length;

int M ;

int index;

for(int i=0;i<length;i++){

M = Integer.MAX_VALUE;

index = i;

for(int j=i;j<length;j++){

if(M > arr[j]){

M = arr[j];

index = j;

}

}//选择过程

if(i!=index)

Tools.swap(arr,i,index);//交换过程

}

}

}