Challenge 🤔 Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic…

Problem 🤔 Given an array of integers, find if the array contains any duplicates. Your function…

Problem 🤔 Given a binary array, find the maximum number of consecutive 1s in this array, or in…

Problem 🤔 Given an array nums of integers, return how many of them contain an even number of digits…

Problem 🤔 Given an array of integers nums and an integer target, return indices of the two numbers…

Problem 🤔 Given a root node reference of a BST and a key, delete the node with the given key in the…