c++冒泡排序法
// 冒泡排序法.cpp //第一个数依次和相邻的数对比,大的数放第二位,直到把数排列成由小到大。 #include <iostream> using namespace std; int main() { int arr[] = { 4,2,8,5,7,1,3,9,12,15,17,21,24,16,78,90 }; cout << "排序前:" << endl; int index = size(arr); //cout << index; for (int i = 0; i < index; i++) { cout << arr[i] << " "; } cout << endl; cout << endl; //开始冒泡排序,排序的总轮数等于元素个数-1; for (int i = 0; i < index - 1; i++) { //内层对比次数 = 元素个数 - 当前轮数-1; for (int j = 0; j < 9 - i - 1; j++) { if (arr[j] > arr[j + 1]) { //交换代码; int temp = 0; temp = arr[j]; arr[j] = arr[j + 1]; arr[j + 1] = temp; } } } cout << "排序后:" << endl; for (int i = 0; i < index; i++) { cout << arr[i] << " "; } cout << endl; cout << endl; system("pause"); return 0; }
结果:
排序前: 4 2 8 5 7 1 3 9 12 15 17 21 24 16 78 90 排序后: 1 2 3 4 5 7 8 9 12 15 17 21 24 16 78 90 请按任意键继续. . .