Aug 5, 2025 · 4 min read · Problem Statement You are given two arrays fruits and baskets of equal length n. Place fruits into baskets following these rules: Each fruit type must be placed in the leftmost available basket with sufficient capacity Each basket holds only one typ...
Join discussion
Jul 27, 2025 · 4 min read · Problem Description LeetCode 2210 asks us to count the number of hills and valleys in an array. A hill is an element that is strictly greater than its neighbors, while a valley is an element that is strictly smaller than its neighbors. The key challe...
Join discussion
Jul 13, 2025 · 5 min read · Problem Description LeetCode 160: Intersection of Two Linked Lists Given the heads of two singly linked lists headA and headB, return the node at which the two lists intersect. If the two linked lists have no intersection at all, return null. The l...
Join discussion
Jul 12, 2025 · 4 min read · Problem Description LeetCode 2006 Count Number of Pairs With Absolute Difference K Given a 0-indexed integer array nums, return true if it can be made strictly increasing after removing exactly one element, or false otherwise. If the array is already...
Join discussion
Jul 12, 2025 · 4 min read · Problem Description LeetCode 1909: Remove One Element to Make the Array Strictly Increasing Given a 0-indexed integer array nums, return true if it can be made strictly increasing after removing exactly one element, or false otherwise. If the array...
Join discussion
Jul 10, 2025 · 3 min read · 232. Implement Queue using Stacks To implement a queue (FIFO) using two stacks, we need to simulate the first-in-first-out behavior. The key idea is to use one stack (stack1) for pushing elements and another stack (stack2) for popping/peeking. When w...
Join discussion
Jul 10, 2025 · 4 min read · LeetCode 326. Power of Three This code determines whether a given integer n is a power of three. A power of three is any integer that can be expressed as (3^k) where (k) is a non-negative integer (e.g., (3^0 = 1), (3^1 = 3), (3^2 = 9), etc.). Step-b...
Join discussion
Jul 9, 2025 · 4 min read · Leetcode 706: Design HashMap Problem Summary – Leetcode 706: Design HashMap You're asked to implement a basic HashMap data structure that supports: put(key, value) — insert/update a key-value pair. get(key) — retrieve the value by key; return -1 if ...
Join discussion
Jul 6, 2025 · 5 min read · LeetCode 121: Best Time to Buy and Sell Stock Problem Statement You are given an array prices where prices[i] is the price of a given stock on the ith day. You want to maximize your profit by choosing a single day to buy one stock and choosing a dif...
Join discussion
Jul 4, 2025 · 5 min read · LeetCode Link Date: 1st July 2025 Topics: String Problem Understanding LeetCode 3330: Find the Original Typed String I presents a relatable scenario: Alice accidentally holds keys too long while typing, causing characters to repeat. The key constrai...
Join discussion