Empowering coders, one solution at a time
Empowering coders, one solution at a time
![[Solved] Count Asterisks LeetCode Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/06/Solved-Count-Asterisks-LeetCode-Contest-Problem.png "[Solved] Count Asterisks LeetCode Contest Problem")
Count Asterisks: You are given a string s, where every two consecutive vertical bars ‘|’ are grouped into a pair. In other words, the 1st and 2nd ‘|’ make a pair, the 3rd and 4th ‘|’ make a pair, and so forth. Return the number of ‘*’ in s, excluding the ‘*’ between each pair of ‘|’. Note that each ‘|’ will belong to exactly one…
![[Solved] Count Unreachable Pairs of Nodes in an Undirected Graph LeetCode Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/06/Solved-Count-Unreachable-Pairs-of-Nodes-in-an-Undirected-Graph-LeetCode-Contest-Problem.png "[Solved] Count Unreachable Pairs of Nodes in an Undirected Graph LeetCode Contest Problem")
Count Unreachable Pairs of Nodes in an Undirected Graph: You are given an integer n. There is an undirected graph with n nodes, numbered from 0 to n – 1. You are given a 2D integer array edges where edges[i] = [ai, bi] denotes that there exists an undirected edge connecting nodes ai and bi. Return the number of…
![[Solved] Maximum XOR After Operations LeetCode Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/06/Solved-Maximum-XOR-After-Operations-LeetCode-Contest-Problem.png "[Solved] Maximum XOR After Operations LeetCode Contest Problem")
Maximum XOR After Operations: You are given a 0-indexed integer array nums. In one operation, select any non-negative integer x and an index i, then update nums[i] to be equal to nums[i] AND (nums[i] XOR x). Note that AND is the bitwise AND operation and XOR is the bitwise XOR operation. Return the maximum possible bitwise XOR of all…
![[Solved] Number of Distinct Roll Sequences LeetCode Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/06/Solved-Number-of-Distinct-Roll-Sequences-LeetCode-Contest-Problem.png "[Solved] Number of Distinct Roll Sequences LeetCode Contest Problem")
Number of Distinct Roll Sequences: You are given an integer n. You roll a fair 6-sided dice n times. Determine the total number of distinct sequences of rolls possible such that the following conditions are satisfied: The greatest common divisor of any adjacent values in the sequence is equal…
![[Solved] Find Smallest Letter Greater Than Target Binary Search LeetCode](https://realcoder.techss24.com/wp-content/uploads/2022/06/Solved-Find-Smallest-Letter-Greater-Than-Target-Binary-Search-LeetCode.png "[Solved] Find Smallest Letter Greater Than Target Binary Search LeetCode")
Find Smallest Letter Greater Than Target Binary Search: Given a characters array letters that is sorted in non-decreasing order and a character target, return the smallest character in the array that is larger than target. Note that the letters wrap around. For example, if target == ‘z’ and letters == [‘a’,…
![[Solved] Selling Pieces of Wood Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/06/Solved-Selling-Pieces-of-Wood-Contest-Problem.png "[Solved] Selling Pieces of Wood Contest Problem")
Selling Pieces of Wood: You are given two integers m and n that represent the height and width of a rectangular piece of wood. You are also given a 2D integer array prices, where prices[i] = [hi, wi, pricei] indicates you can sell a rectangular piece of…
![[Solved] Longest Binary Subsequence Less Than or Equal to K Case Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/06/Solved-Longest-Binary-Subsequence-Less-Than-or-Equal-to-K-Case-Contest-Problem.png "[Solved] Longest Binary Subsequence Less Than or Equal to K Case Contest Problem")
Longest Binary Subsequence Less Than or Equal to K: You are given a binary string s and a positive integer k. Return the length of the longest subsequence of s that makes up a binary number less than or equal to k. Note: The subsequence can contain leading zeroes. The empty string…
![[Solved] Sum of Numbers With Units Digit K Case Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/06/Solved-Sum-of-Numbers-With-Units-Digit-K-Case-Contest-Problem.png "[Solved] Sum of Numbers With Units Digit K Contest Problem")
Sum of Numbers With Units Digit K: Given two integers num and k, consider a set of positive integers with the following properties: The units digit of each integer is k. The sum of the integers is num. Return the minimum possible size of such a set, or -1 if…
![[Solved] Greatest English Letter in Upper and Lower Case Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/06/Solved-Greatest-English-Letter-in-Upper-and-Lower-Case-Contest-Problem.png "[Solved] Greatest English Letter in Upper and Lower Case Contest Problem")
Greatest English Letter in Upper and Lower Case: Given a string of English letters s, return the greatest English letter which occurs as both a lowercase and uppercase letter in s. The returned letter should be in uppercase. If no such letter exists, return an empty string. An English…
![[Solved] Binary Tree Cameras LeetCoding Challenge Problem](https://realcoder.techss24.com/wp-content/uploads/2022/06/Solved-Binary-Tree-Cameras-LeetCoding-Challenge-Problem.png "[Solved] Binary Tree Cameras LeetCoding Challenge Problem")
Binary Tree Cameras: You are given the root of a binary tree. We install cameras on the tree nodes where each camera at a node can monitor its parent, itself, and its immediate children. Return the minimum number of cameras needed to monitor…