easyarrays 10 XP per passing test

Two Sum

Name: PrepSync
Rating: 4.9 (120 reviews)

Problem

Given an array of integers and an integer target, find two elements in the array that add up to the target. Return the indices of these two numbers. The indices should be 1-based. If no such pair exists, return -1.

Sample input

Output

(run your code to see output)