Challenge: First Non-Repeating Integer in a List

Try to solve the First NonRepeating Integer in a List problem.

We'll cover the following

Statement

Given a list nums, find the first nonrepeating integer in it.

Constraints:

  • 1≤1 \leq nums.length ≤103\leq 10^3

  • −104≤-10^4 \leq nums[i] ≤104 \leq 10^4

Examples

Level up your interview prep. Join Educative to access 70+ hands-on prep courses.