60. Sudoku
Task Sudoku is a number-placement puzzle. The objective is to fill a 9 × 9 grid with digits so that each column, each row, and each... »
59. spiralNumbers
Task Construct a square matrix with a size N × N containing integers from 1 to N * N in a spiral order, starting from top-left... »
58.messageFromBinaryCode
Task You are taking part in an Escape Room challenge designed specifically for programmers. In your efforts to find a clue, you’ve found a binary code... »
57. File Naming
Task You are given an array of desired filenames in the order of their creation. Since two files cannot have equal names, the one which comes... »
56. digitsProduct
Task Given an integer product, find the smallest positive (i.e. greater than 0) integer the product of whose digits is equal to product. If there is... »
55. Different Squares
Task Given a rectangular matrix containing only digits, calculate the number of different 2 × 2 squares in it. Example For matrix = [[1, 2, 1],... »
54. sumUpNumbers
Task CodeMaster has just returned from shopping. He scanned the check of the items he bought and gave the resulting string to Ratiorg to figure out... »
53. Valid Time
Task Check if the given string is a correct time representation of the 24-hour clock. Example For time = "13:58", the output should be validTime(time) =... »
52. longestWord
Task Define a word as a sequence of consecutive English letters. Find the longest word from the given string. Example For text = "Ready, steady, go!",... »
51. deleteDigit
Task Given some integer, find the maximal number you can obtain by deleting exactly one digit of the given number. Example For n = 152, the... »