删掉数组中重复的元素

原数组 a[] = {1,2,3,4,5,3,7,};
示例一（删掉数组中重复的后部分元素）

• 输出：

a[]={1,2,3,4,5,7,}

# include<stdio.h>

int main()
{
    int a[] = {1,2,3,4,5,3,7,};
    int i,t;
    int k = 0;
    for (i = 0;i < sizeof(a)/sizeof(a[0]); i ++) {
        for (t = 0; t < i; t ++) {
            if (a[i] == a [t]) 
                break;            
        }
        if (t == i)      
            a[k++] = a[i];
    }

    for (i = 0; i < k; i ++ ) {
        printf("%d ", a[i]);
    }
    printf("\n");

    return 0;
}

示例二（删掉数组中重复的前部分元素）：

• 输出：

a[]={1,2,4,5,3,7,}

# include<stdio.h>

int main()
{
    int a[] = {1,2,3,4,5,3,7,};
    int i,t;
    int k = 0;
    for (i = 0;i < sizeof(a)/sizeof(a[0]); i ++) {
        for (t = i+1; t < sizeof(a)/sizeof(a[0]); t ++) {
            if (a[i] == a [t]) 
                break;            
        }
        if (t == sizeof(a)/sizeof(a[0]))      
            a[k++] = a[i];
    }

    for (i = 0; i < k; i ++ ) {
        printf("%d ", a[i]);
    }
    printf("\n");

    return 0;
}