Java | O(1) | easy to understand
IntuitionApproachComplexity
Time complexity : O(1)

Space complexity : O(1)
Code
# Intuition
<!-- Describe your first thoughts on how to solve this problem. -->

# Approach
<!-- Describe your approach to solving the problem. -->

# Complexity
- Time complexity : O(1)
<!-- Add your time complexity here, e.g. $$O(n)$$ -->

- Space complexity : O(1)
<!-- Add your space complexity here, e.g. $$O(n)$$ -->

# Code
```java []
class Solution {
    public int numberOfChild(int n, int k) {
        k=k%(2*(n-1));
        if(k/n==0){
            return k%n;
        }else{
            return n-2-(k%n);
        }
    }
}
```
['Java']