114 lines
1.6 KiB
C++
114 lines
1.6 KiB
C++
#include <stdio.h>
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// #include <iostream>
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#include <stdlib.h>
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#include <time.h>
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#define LENGTH 10000
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//数组长度
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#define OUTPUT
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//是否输出
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// #define RANDOM
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//随机数
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#define MODE_1
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//MODE_1: 迭代
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//MODE_2: 递归
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int a[LENGTH];
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void init()
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{
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#ifdef RANDOM
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srand(time(NULL));
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#endif
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for(int i = 0 ; i < LENGTH ; i++)
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#ifdef RANDOM
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a[i]=1+rand()%LENGTH;
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#else
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a[i]=LENGTH-i;
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#endif
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}
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void swap(int *a,int *b)
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{
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int c = *a;
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*a = *b;
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*b = c;
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}
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#ifdef MODE_1
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void bobblesort1A(int a[],int n)
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{
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bool sorted = false;
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A:
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sorted = true;
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for(int i = 1 ; i < n ; i++)
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{
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if(a[i-1] > a[i])
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{
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swap(&a[i-1],&a[i]);
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sorted=false;
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}
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}
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n--;
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if(sorted==false)
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goto A;
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}
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#elif defined MODE_2
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void bobblesort1A(int a[],int n)
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{
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bool sorted = false;
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sorted = true;
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for(int i = 1 ; i < n ; i++)
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{
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if(a[i-1] > a[i])
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{
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swap(&a[i-1],&a[i]);
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sorted=false;
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}
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}
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n--;
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if(n==1)
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return;
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bobblesort1A(a,n);
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}
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#endif
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int main(){
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init();
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clock_t start_t, end_t;
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double total_t;
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#ifdef OUTPUT
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printf("Before\n");
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for(int i=0;i<LENGTH;i++)
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printf("%d \n",a[i]);
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#endif
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start_t = clock();
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bobblesort1A(a,LENGTH);
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end_t = clock();
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#ifdef OUTPUT
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printf("After\n");
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for(int i=0;i<LENGTH;i++)
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printf("%d \n",a[i]);
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#endif
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printf("运算时间: %.4f 秒\n",((double)(end_t - start_t) / CLOCKS_PER_SEC));
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system("pause");
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} |