将数组中n个整个按照相反顺序存放

Posted 2021-07-31 yangbocsu

将数组中n个整个按照相反顺序存放；

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// yangbocsu 2021.05.23 民主楼

#include<stdio.h>
#define N 9
void inv(int arr[], int cnt);
void print(int arr[],int cnt);

int main(void) 
{
    int arr[] = {1,2,3,4,5,6,7,8,9};
    print(arr,N);
    inv(arr,N);
    print(arr,N);
    return 0;
}

void inv(int arr[], int cnt)
{
    int m = (cnt-1)/2;
    int temp;
    for (int i = 0; i <= m ; i++)
    {
        temp = arr[i];
        arr[i] = arr[cnt - 1 - i];
        arr[cnt - 1 - i] = temp;
    }
}

//打印数组
void print(int arr[],int cnt)
{
    for (int i = 0; i < cnt; i++)
    {
        if(i == (cnt-1))
            printf("%d\\n",arr[i]);
        else
            printf("%d ",arr[i]);
    }
}