Problem You are given an array trees where trees[i] = [x i , y i ] represents the location of a tree in the garden. You are asked to fence the entire garden using the minimum length of rope as it is expensive. The garden is …
Problem You are given a string s consisting of lowercase English letters. A duplicate removal consists of choosing two adjacent and equal letters and removing them. We repeatedly make duplicate removals on s u…
Problem : You are given a positive integer num consisting only of digits 6 and 9 . Return the maximum number you can get by changing at most one digit ( 6 becomes 9 , and 9 becomes 6 ) . Example 1: Input: num …
Problem You are given a 0-indexed array nums of size n consisting of non-negative integers. You need to apply n - 1 operations to this array where, in the i th operation ( 0-indexed ), you will apply the…
Problem Description A message containing letters from A-Z can be encoded into numbers using the following mapping: 'A' -> "1" 'B' -> "2" ... 'Z' -> "26" To decode an…