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Problem: Two Sum

Explore the Two Sum problem where you find indices of two distinct elements in an array that add up to a target value. Learn to implement a nested loop approach in Java, analyze its O(n²) time and O(1) space complexities, and understand how to handle array traversals effectively.

Statement

Given an array of integers nums and an integer target, find two distinct elements in nums whose sum equals target. Return the indices of these two elements.

You may assume that each input has exactly one valid solution. The same element cannot be used twice. The answer may be returned in any order.

Constraints:

  • 22 \leq nums.length 104\leq 10^4

  • 109-10^9 \leq ...