1.从排序数组中删除重复项

removeDuplicates.c

int removeDuplicates(int* nums, int numsSize) {
    if (numsSize <= 0) {
        return 0;
    }
    int j = 0;
    for (int i = 1; i < numsSize; i++) {
        if (nums[j] == nums[i])
            continue;
        nums[++j] = nums[i];
    }
    return j+1;
}