LeetCode – Stack – Remove All Adjacent Duplicates In String
Given a string S of lowercase letters, a duplicate removal consists of choosing two adjacent and equal letters, and removing them. We repeatedly make duplicate removals on S until we…
LeetCode – Stack – Build an Array With Stack Operations
Given an array target and an integer n. In each iteration, you will read a number from list = {1,2,3..., n}. Build the target array using the following operations: You…
LeetCode – Stack – Remove Outermost Parentheses
Given an array target and an integer n. In each iteration, you will read a number from list = {1,2,3..., n}. Build the target array using the following operations: You…
LeetCode – Stack – Remove Outermost Parentheses
A valid parentheses string is either empty (""), "(" + A + ")", or A + B, where A and B are valid parentheses strings, and + represents string concatenation.…
Kubernetes – Live Beginner/Elementary Master Course by Red hat Developers
DevNation events by Red Hat Developers are streaming virtual events. Sessions include real code and commands, live Q&A, and group interaction to help you get started. July 6, 2020 Master…
Welcome to Tech News at DevOpsPal
Hi everyone, finally we have started tech new updates here on DevOpsPal. News related to latest technologies, softwares, tools, versions, etc will be posted here on a frequent basis in…
LeetCode – Hashtable – Number of Good Pairs
Given an array of integers nums. A pair (i,j) is called good if nums == nums and i < j. Return the number of good pairs. Example 1: Input: nums…
LeetCode – BackTracking – Letter Case Permutation
Given a string S, we can transform every letter individually to be lowercase or uppercase to create another string. Return a list of all possible strings we could create. Examples:…
LeetCode – Strings – Search Suggestions System
Given an array of strings products and a string searchWord. We want to design a system that suggests at most three product names from products after each character of searchWord…
LeetCode – Strings – Check If a String Can Break Another String
Given two strings: s1 and s2 with the same size, check if some permutation of string s1 can break some permutation of string s2 or vice-versa (in other words s2…