juble의 개발노트

ProblemSuppose there is a circle. There are N petrol pumps on that circle. Petrol pumps are numbered 0 to (N-1) (both inclusive). You have two pieces of information corresponding to each of the petrol pump: (1) the amount of petrol that particular petrol pump will give, and (2) the distance from that petrol pump to the next petrol pump.Initially, you have a tank of infinite capacity carrying no ..

ProblemIt is New Year's Day and people are in line for the Wonderland rollercoaster ride. Each person wears a sticker indicating their initial position in the queue from 1 to n. Any person can bribe the person directly in front of them to swap positions, but they still wear their original sticker. One person can bribe at most two others.Determine the minimum number of bribes that took place to g..

ProblemWe define super digit of an integer x using the following rules:Given an integer, we need to find the super digit of the integer.If x has only 1 digit, then its super digit is x.Otherwise, the super digit of x is equal to the super digit of the sum of the digits of x.For example, the super digit of 9875 will be calculated as: super_digit(9875) 9+8+7+5 = 29 super_digit(29) 2 + 9 = 11 ..

ProblemGiven a square grid of characters in the range ascii[a-z], rearrange elements of each row alphabetically, ascending. Determine if the columns are also in ascending alphabetical order, top to bottom. Return YES if they are or NO if they are not. Examplegrid = ['abc', 'ade', 'efg']The grid is illustrated below.a b ca d ee f gThe rows are already in alphabetical order. The columns a a e, b d..

Given a string of lowercase letters in the range ascii[a-z], determine the index of a character that can be removed to make the string a palindrome. There may be more than one solution, but any will do. If the word is already a palindrome or there is no solution, return -1. Otherwise, return the index of a character to remove. Examples = "bcbc"Either remove 'b' at index 0 or 'c' at index 3. Func..

ProblemJulius Caesar protected his confidential information by encrypting it using a cipher. Caesar's cipher shifts each letter by a number of letters. If the shift takes you past the end of the alphabet, just rotate back to the front of the alphabet. In the case of a rotation by 3, w, x, y and z would map to z, a, b and c.Original alphabet: abcdefghijklmnopqrstuvwxyzAlphabet rotated +3: ..

Problem In this challenge, the task is to debug the existing code to successfully execute all provided test files.Given an array of n distinct integers, transform the array into a zig zag sequence by permuting the array elements. A sequence will be called a zig zag sequence if the first  elements in the sequence are in increasing order and the last k elements are in decreasing order, where k=(n+..

ProblemSean invented a game involving a  2n×2n matrix where each cell of the matrix contains an integer. He can reverse any of its rows or columns any number of times. The goal of the game is to maximize the sum of the elements in the n×n submatrix located in the upper-left quadrant of the matrix. Given the initial configurations for q matrices, help Sean reverse the rows and columns of each mat..