LeetCode Contains Duplicate II

bool containsNearbyDuplicate(int* nums, int numsSize, int k) {

int i, j;

for(i=0;  i<numsSize; i++)

{

for(j=1; j<=k; j++)

{

if(i+j <= numsSize-1)

{

if(nums[i] == nums[i+j])

return true;

}

else

break;

}

}

return false;

}