Posted on Mon 18 November 2024 in Leetcode • Tagged with set, fast-slow-pointer
Question Link : https://leetcode.com/problems/happy-number/
Difficulty: Easy
Premium: False
Write an algorithm to determine if a number n is happy. A happy number is a number defined by the following process:
Starting with any positive integer, replace the number by the sum of the squares of its …
Posted on Mon 18 November 2024 in Leetcode • Tagged with set
Question Link : https://leetcode.com/problems/contains-duplicate/
Difficulty: Easy
Premium: False
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. Example 1:
Input: nums = [1,2,3,1] Output: true Explanation: The element …
Posted on Mon 02 September 2024 in Leetcode • Tagged with set
Question Link : https://leetcode.com/problems/jewels-and-stones/
Difficulty: Easy
Premium: False
You're given strings jewels representing the types of stones that are jewels, and stones representing the stones you have. Each character in stones is a type of stone you have. You want to know how many of the …