Search⌘ K
AI Features

Solution: Count Pairs Whose Sum is Less than Target

Explore how to apply the two pointers pattern to count the number of distinct pairs in a sorted array whose sums are less than a given target. Learn to optimize pair evaluation by sorting and using pointer movements to achieve efficient time and space complexity in this practical coding interview problem.

Statement

You are given a 0-indexed integer array, nums, of length nn, and an integer target. Your task is to determine the number of distinct pairs of indexes (i,j)(i, j) such that:

  • 0 ...