关键代码：
for（）
C语言
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#include <stdlib.h>#include <stdio.h>void Merge(int sourceArr[],int tempArr[], int startIndex, int midIndex, int endIndex){ int i = startIndex, j=midIndex+1, k = startIndex; while(i!=midIndex+1 && j!=endIndex+1) { if(sourceArr[i] > sourceArr[j]) tempArr[k++] = sourceArr[j++]; else tempArr[k++] = sourceArr[i++]; } while(i != midIndex+1) tempArr[k++] = sourceArr[i++]; while(j != endIndex+1) tempArr[k++] = sourceArr[j++]; for(i=startIndex; i<=endIndex; i++) sourceArr[i] = tempArr[i];}//内部使用递归void MergeSort(int sourceArr[], int tempArr[], int startIndex, int endIndex){ int midIndex; if(startIndex < endIndex) { midIndex = startIndex + (endIndex-startIndex) / 2;//避免溢出int MergeSort(sourceArr, tempArr, startIndex, midIndex); MergeSort(sourceArr, tempArr, midIndex+1, endIndex); Merge(sourceArr, tempArr, startIndex, midIndex, endIndex); }}int main(int argc, char * argv[]){ int a[8] = {50, 10, 20, 30, 70, 40, 80, 60}; int i, b[8]; MergeSort(a, b, 0, 7); for(i=0; i<8; i++) printf("%d ", a[i]); printf("
"); return 0;} |
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