Missing Number in an array

[SiddhiShivale]

Problem explanation:

Example 1:
Input Format:
N = 5, array[] = {1,2,4,5}
Result:
3
Explanation:
In the given array, number 3 is missing. So, 3 is the answer.

Example 2:
Input Format:
N = 3, array[] = {1,3}
Result:
2
Explanation:
In the given array, number 2 is missing. So, 2 is the answer.

Hey @yesiamrajeev I want to contribute in hactoberfest2024. If you find this problem useful please add a tag to it and assign me the same. I will be solving this in java.