Empowering coders, one solution at a time
Empowering coders, one solution at a time
Ajay wants to purchase a new car for his birthday. He finally finds himself with two options: Car 1: Uses diesel fuel and has a fuel efficiency of x1 km/l Car 2: Uses petrol and has a fuel efficiency of…
![[Solved] Maximum Segment Sum After Removals LeetCode Contest](https://realcoder.techss24.com/wp-content/uploads/2022/08/Solved-Maximum-Segment-Sum-After-Removals-LeetCode-Contest.png "[Solved] Maximum Segment Sum After Removals LeetCode Contest")
You are given two 0-indexed integer arrays nums and removeQueries, both of length n. For the ith query, the element in nums at the index removeQueries[i] is removed, splitting nums into different segments. A segment is a contiguous sequence of positive integers in nums. A segment sum is the sum of every element in a segment. Return an integer array answer, of length n,…
![[Solved] Shifting Letters II LeetCode Contest](https://realcoder.techss24.com/wp-content/uploads/2022/08/Solved-Shifting-Letters-II-LeetCode-Contest.png "[Solved] Shifting Letters II LeetCode Contest")
You are given a string s of lowercase English letters and a 2D integer array shifts where shifts[i] = [starti, endi, directioni]. For every i, shift the characters in s from the index starti to the index endi (inclusive) forward if directioni = 1, or shift the characters backward if directioni = 0. Shifting a character forward means replacing it…
![[Solved] Time Needed to Rearrange a Binary String LeetCode Contest](https://realcoder.techss24.com/wp-content/uploads/2022/08/Solved-Time-Needed-to-Rearrange-a-Binary-String-LeetCode-Contest.png "[Solved] Time Needed to Rearrange a Binary String LeetCode Contest")
You are given a binary string s. In one second, all occurrences of “01” are simultaneously replaced with “10”. This process repeats until no occurrences of “01” exist. Return the number of seconds needed to complete this process. Time Needed to Rearrange a Binary String LeetCode Contest Example 1: Input: s = “0110101”…
![[Solved] Minimum Recolors to Get K Consecutive Black Blocks LeetCode Contest](https://realcoder.techss24.com/wp-content/uploads/2022/08/Solved-Minimum-Recolors-to-Get-K-Consecutive-Black-Blocks-LeetCode-Contest.png "[Solved] Minimum Recolors to Get K Consecutive Black Blocks LeetCode Contest")
You are given a 0-indexed string blocks of length n, where blocks[i] is either ‘W’ or ‘B’, representing the color of the ith block. The characters ‘W’ and ‘B’ denote the colors white and black, respectively. You are also given an integer k, which is the desired number of consecutive black blocks. In one operation, you can recolor a white block…
![[Solved] Count Special Integers LeetCode Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/08/Solved-Count-Special-Integers-LeetCode-Contest-Problem.png "[Solved] Count Special Integers LeetCode Contest Problem")
We call a positive integer special if all of its digits are distinct. Given a positive integer n, return the number of special integers that belong to the interval [1, n]. Count Special Integers LeetCode Contest Example 1: Input: n = 20 Output: 19 Explanation: All the integers…
![[Solved] Largest Local Values in a Matrix LeetCode Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/08/Solved-Largest-Local-Values-in-a-Matrix-LeetCode-Contest-Problem.png "[Solved] Largest Local Values in a Matrix LeetCode Contest Problem")
You are given an n x n integer matrix grid. Generate an integer matrix maxLocal of size (n – 2) x (n – 2) such that: maxLocal[i][j] is equal to the largest value of the 3 x 3 matrix in grid centered around row i + 1 and column j + 1. In other words, we want…
![[Solved] Number of Excellent Pairs LeetCode Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/07/Solved-Number-of-Excellent-Pairs-LeetCode-Contest-Problem.png "[Solved] Number of Excellent Pairs LeetCode Contest Problem")
You are given a 0-indexed positive integer array nums and a positive integer k. A pair of numbers (num1, num2) is called excellent if the following conditions are satisfied: Both the numbers num1 and num2 exist in the array nums. The sum of the number of set bits in num1 OR num2 and num1 AND num2 is greater than…
![[Solved] Design a Food Rating System LeetCode Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/07/Solved-Design-a-Food-Rating-System-LeetCode-Contest-Problem.png "[Solved] Design a Food Rating System LeetCode Contest Problem")
Design a food rating system that can do the following: Modify the rating of a food item listed in the system. Return the highest-rated food item for a type of cuisine in the system. Implement the FoodRatings class: FoodRatings(String[] foods, String[] cuisines, int[]…
![[Solved] First Letter to Appear Twice LeetCode Contest Problem](https://realcoder.techss24.com/wp-content/uploads/2022/07/Solved-First-Letter-to-Appear-Twice-LeetCode-Contest-Problem.png "[Solved] First Letter to Appear Twice LeetCode Contest Problem")
Given a string s consisting of lowercase English letters, return the first letter to appear twice. Note: A letter a appears twice before another letter b if the second occurrence of a is before the second occurrence of b. s will contain at least one letter that appears twice. First Letter to Appear Twice LeetCode Contest…