题解 | #序列中整数去重# #函数实现#

#include <stdio.h>
#include<stdlib.h>
int re(int *arr1,int n,int *arr2)
{
    int i,j;
    for(i = 0;i<n;i++)
    {
        for(j = i-1;j >=0;j--)
        {
            if(*(arr1+i)==*(arr1+j))
            *(arr1+i) = -1; 
        }
    }

    for(i = 0,j = 0;i<n;i++)
    {
        if(*(arr1+i) != -1)
    {
        *(arr2+j) = *(arr1+i);
            j++;
    }
    }
    return j;
}
int main() {
    int sum,n,i;
    scanf("%d",&n);

    int *arr1 = (int *)malloc(n*sizeof(int));
    int *arr2 = (int *)malloc(n*sizeof(int));
    
    for(i=0;i<n;i++)
    scanf("%d",arr1+i);

    sum = re(arr1,n,arr2);

    for(i=0;i<sum;i++)
    printf("%d ",*(arr2+i));
    return 0;
}