932. Sum of First N Numbers

Given an integer N, return the sum of first N natural numbers. Try to solve this using recursion.

Example 1:

Input : N = 4

Output : 10

Explanation : first four natural numbers are 1, 2, 3, 4.

Sum is 1 + 2 + 3 + 4 => 10.

Example 2:

Input : N = 2

Output : 3

Explanation : first two natural numbers are 1, 2.

Sum is 1 + 2 => 3.

Now Your Turn!

Pick the correct output for the given input

Input : N = 10

Still unsure what the problem is asking ?

Let’s go through a few more examples, step by step, to make it clearer.

Constraints:

  • 1 <= N <= 103
0
class Solution{
public:
int NnumbersSum(int N){
//your code goes here
}
};
Test Case

Input:

N
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