Difficulty: Medium Link: Day 26, May Leetcode Challenge Problem Description A decimal number is called deci-binary if each of its digits is either 0 or 1 without any leading zeros. For…

# Tag: Java

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…

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…

Difficulty: Medium Link: Day 19:May Leetcode Challenge Problem Description Given an integer array nums of size n, return the minimum number of moves required to make all array elements…

Difficulty: Medium Link: Day 18: May Leetcode Challenge Problem Description Given a list paths of directory info, including the directory path, and all the files with contents…

Difficulty: Medium Link: Day 17: May Leetcode Challenge Problem Description Given a list of words, each word consists of English lowercase letters. Let’s say word1 is a…

Difficulty: Hard Link : Day 15: May Leetcode Challenge Asked in : Facebook, Linkedin, Twitch Problem Description A valid number can be split up into these components…

Difficulty: Medium Link: Day 14: May Leetcode Challenge Problem Description Given the root of a binary tree, flatten the tree into a “linked list”: The “linked list”…

Difficulty: Medium Link: Day 13: May Leetcode Challenge Problem Description We had some 2-dimensional coordinates, like “(1, 3)” or “(2, 0.5)”. Then, we removed all commas, decimal points, and…

Difficulty: Medium Link: Leetcode 986 Problem Statement You are given two lists of closed intervals, firstList and secondList, where firstList[i] = [starti, endi] and secondList[j] = [startj, endj]. Each list of…