Single Number LeetCode Solution
Given a non-empty array of integers nums, every element appears twice except for one. Find that single one.
Given a non-empty array of integers nums, every element appears twice except for one. Find that single one.
Given an integer array nums and an integer k, return true if there are two distinct indices i and j in the array such that nums[i] == nums[j] and abs(i – j) <= k.
Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element is distinct.
You are given an integer array nums and two integers indexDiff and valueDiff. Find a pair of indices (i, j) such that: i != j, abs(i – j) <= indexDiff. abs(nums[i] - nums[j]) <= valueDiff, and Return true if such pair exists or false otherwise.