# Min Cost Climbing Stairs

Difficulty: Easy Link: Day 8: June Leetcode Challenge Problem Statement You are given an integer array cost where cost[i] is the cost of ith step on a staircase. Once you pay…

# Max Area of Island (Leetcode 695)

Difficulty: Medium Link: Day1 : June LeetCode Challenge Problem Description You are given an m x n binary matrix grid. An island is a group of 1‘s (representing land)…

# Maximum Product of Word Lengths (Leetcode 318)

Difficulty: Medium Link: Day 27: May Leetcode Challenge Problem Statement Given a string array words, return the maximum value of length(word[i]) * length(word[j]) where the two words do not…

# Evaluate Reverse Polish Notation (Leetcode 150)

Difficulty: Medium Link: Day 25: May Leetcode Challenge Problem Description Evaluate the value of an arithmetic expression in Reverse Polish Notation. Valid operators are +, -, *, and /. Each…

# Find and Replace Pattern (Leetcode 890)

Difficulty: Medium Link: Day 21: May Leetcode Challenge Problem Description Given a list of strings words and a string pattern, return a list of words[i] that match pattern. You may return the…

# Range Sum Query 2D – Immutable (Leetcode 304)

Difficulty: Medium Link: Day 12: May Leetcode Challenge Problem Description Given a 2D matrix matrix, handle multiple queries of the following type: Calculate the sum of the elements…

# Count Primes

Difficulty: Easy Link: Day 2: May LeetCode Challenge Problem Description Count the number of prime numbers less than a non-negative number, n. Examples Constraints 0 <=…

# Delete Operation for Two Strings (Leetcode 583)

Problem Description Given two strings word1 and word2, return the minimum number of steps required to make word1 and word2 the same. In one step, you can delete exactly one character in either string. Examples Constraints…

# Convert Sorted List to Binary Search Tree (Leetcode 109)

Difficulty: Medium. Link: Day 6: May Leetcode Challenge Problem Description Given the head of a singly linked list where elements are sorted in ascending order, convert it to…

# Jump Game II (Leetcode 45)

Difficulty: Medium Link : Day 5: May Leetcode Challenge Problem Description Given an array of non-negative integers nums, you are initially positioned at the first index…