C/数组去重复.c

#include <stdio.h>

void removeDuplicates(int arr[], int *size) {
    int i, j, k;
    
    for (i = 0; i < *size; ++i) {
        for (j = i + 1; j < *size;) {
            if (arr[j] == arr[i]) {
                for (k = j; k < *size - 1; ++k) {
                    arr[k] = arr[k + 1];
                }
                (*size)--;
            } else {
                ++j;
            }
        }
    }
}

int main() {
    int n, i;
    scanf("%d", &n);
    
    int arr[n];
    for (i = 0; i < n; ++i) {
        scanf("%d", &arr[i]);
    }
    
    removeDuplicates(arr, &n);
    
    for (i = 0; i < n; ++i) {
        printf("%d ", arr[i]);
    }
    printf("\n");
    
    return 0;
}