1st KATA: String Calculator Kata (via Roy Osherove)
- Create a simple String calculator with a method int Add(string numbers). The method can take 0, 1 or 2 numbers, and will return their sum (for an empty string it will return 0). For example "" or "1" or "1,2"
- Start with the simplest test case of an empty string and move to 1 and two numbers
- Remember to solve things as simply as possible so that you force yourself to write tests you did not think about
- Remember to refactor after each passing test
- Allow the Add method to handle an unknown amount of numbers
- Allow the Add method to handle new lines between numbers (instead of commas).
- the following input is ok: "1\n2,3" (will equal 6)
- the following input is NOT ok: "1,\n" (not need to prove it - just clarifying)
- Support different delimiters. To change a delimiter, the beginning of the string will contain a separate line that looks like this:
[delimiter]\n[numbers...], for example;\n1;2should return three where the default delimiter is;.- he first line is optional. all existing scenarios should still be supported
- Calling Add with a negative number will throw an exception "negatives not allowed" - and the negative that was passed.
- if there are multiple negatives, show all of them in the exception message
- Write a program that prints the numbers from 1 to 100. But for multiples of three print "Fizz" instead of the number and for the multiples of five print "Buzz". For numbers which are multiples of both three and five print "FizzBuzz".
- Added a different implementation for FizzBuzz using Reactive extensions.
- The changes are described at: http://blog.drorhelper.com/2015/02/fizzbuzz-tdd-kata-using-reactive.html
- Pull Request by: https://github.com/dhelper (manually merged by @garora)
Lets divide this into different steps so, we can easily write and test this.
- Print numbers from 1 to 100
- Print "Fizz" instead of number which is divisible by 3
- Print "Buzz" instead of number which is divisible by 5
- Print "FizzBuzz" instead of number which is divisible by both 3 and 5
- Create a method to accept single number
- Create test to verify supplied number within the range 1 to 100
- Create test to verify number and return result Fizz or Buzz or FizzBuzz per above criteria
Your task is to write a program to calculate the next generation of Conway's game of life, given any starting position. You start with a two dimensional grid of cells, where each cell is either alive or dead. The grid is finite, and no life can exist off the edges. When calculating the next generation of the grid, follow these four rules:
- Any live cell with fewer than two live neighbours dies, as if caused by underpopulation.
- Any live cell with more than three live neighbours dies, as if by overcrowding.
- Any live cell with two or three live neighbours lives on to the next generation.
- Any dead cell with exactly three live neighbours becomes a live cell.
Examples: * indicates live cell, . indicates dead cell
Example input: (4 x 8 grid) 4 8 ........ ....*... ...**... ........
Example output: 4 8 ........ ...... ...... ........
A poker deck contains 52 cards - each card has a suit which is one of clubs, diamonds, hearts, or spades (denoted C, D, H, and S in the input data).
Each card also has a value which is one of 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, king, ace (denoted 2, 3, 4, 5, 6, 7, 8, 9, T, J, Q, K, A).
For scoring purposes, the suits are unordered while the values are ordered as given above, with 2 being the lowest and ace the highest value.
A poker hand consists of 5 cards dealt from the deck. Poker hands are ranked by the following partial order from lowest to highest.
High Card: Hands which do not fit any higher category are ranked by the value of their highest card. If the highest cards have the same value, the hands are ranked by the next highest, and so on.
Pair: 2 of the 5 cards in the hand have the same value. Hands which both contain a pair are ranked by the value of the cards forming the pair. If these values are the same, the hands are ranked by the values of the cards not forming the pair, in decreasing order.
Two Pairs: The hand contains 2 different pairs. Hands which both contain 2 pairs are ranked by the value of their highest pair. Hands with the same highest pair are ranked by the value of their other pair. If these values are the same the hands are ranked by the value of the remaining card.
Three of a Kind: Three of the cards in the hand have the same value. Hands which both contain three of a kind are ranked by the value of the 3 cards.
Straight: Hand contains 5 cards with consecutive values. Hands which both contain a straight are ranked by their highest card.
Flush: Hand contains 5 cards of the same suit. Hands which are both flushes are ranked using the rules for High Card.
Full House: 3 cards of the same value, with the remaining 2 cards forming a pair. Ranked by the value of the 3 cards.
Four of a kind: 4 cards with the same value. Ranked by the value of the 4 cards.
Straight flush: 5 cards of the same suit with consecutive values. Ranked by the highest card in the hand.
Your job is to rank pairs of poker hands and to indicate which, if either, has a higher rank.
Examples: Input: Black: 2H 3D 5S 9C KD White: 2C 3H 4S 8C AH Output: White wins - high card: Ace
Input: Black: 2H 4S 4C 3D 4H White: 2S 8S AS QS 3S Output: White wins - flush
Input: Black: 2H 3D 5S 9C KD White: 2C 3H 4S 8C KH Output: Black wins - high card: 9
Input: Black: 2H 3D 5S 9C KD White: 2D 3H 5C 9S KH Output: Tie
Reversi is a board game for two players. The board contains 8x8 squares. The players place Black or White counters onto the board, one counter per square. More information can be found on Wikipedia en.wikipedia.org/wiki/Reversi?. Your task is to write a program that takes a current board position together with information about whose turn it is, and returns a list of the legal moves for that player. A move is only legal if it results in at least one of the opponent's counters being flipped.
Example input: (the final B indicates it is Black's turn) ........ ........ ........ ...BW... ...WB... ........ ........ ........ B
Example output: (each zero indicates a legal move for Black) ........ ........ ....0... ...BW0.. ..0WB... ...0.... ........ ........ B
The game of yahtzee is a simple dice game. Each player rolls five six-sided dice. They can re-roll some or all of the dice up to three times (including the original roll).
For example, suppose a players rolls 3,4,5,5,2 They hold the two fives and re-roll the other three dice (3,4,2) 5,1,5,5,3 They hold the three fives and re-roll the other two dice (1,3) 5,6,5,5,2
The player then places the roll in a category, such as ones, twos, fives, pair, two pairs etc (see below). If the roll is compatible with the category, the player gets a score for the roll according to the rules. If the roll is not compatible with the category, the player scores zero for the roll.
For example, suppose a player scores 5,6,5,5,2 in the fives category they would score 15 (three fives). The score for that go is then added to their total and the category cannot be used again in the remaining goes for that game. A full game consists of one go for each category. Thus, for their last go in a game, a player must choose their only remaining category.
Your task is to score a GIVEN roll in a GIVEN category. You do NOT have to program the random dice rolling. The game is NOT played by letting the computer choose the highest scoring category for a given roll.
Chance: The player scores the sum of all dice, no matter what they read. For example, 1,1,3,3,6 placed on "chance" scores 14 (1+1+3+3+6) 4,5,5,6,1 placed on "chance" scores 21 (4+5+5+6+1)
Yahtzee: If all dice have the same number, the player scores 50 points. For example, 1,1,1,1,1 placed on "yahtzee" scores 50 1,1,1,2,1 placed on "yahtzee" scores 0
Ones, Twos, Threes, Fours, Fives, Sixes: The player scores the sum of the dice that reads one, two, three, four, five or six, respectively. For example, 1,1,2,4,4 placed on "fours" scores 8 (4+4) 2,3,2,5,1 placed on "twos" scores 4 (2+2) 3,3,3,4,5 placed on "ones" scores 0
Pair: The player scores the sum of the two highest matching dice. For example, when placed on "pair" 3,3,3,4,4 scores 8 (4+4) 1,1,6,2,6 scores 12 (6+6) 3,3,3,4,1 scores 0 3,3,3,3,1 scores 0
Two pairs: If there are two pairs of dice with the same number, the player scores the sum of these dice. For example, when placed on "two pairs" 1,1,2,3,3 scores 8 (1+1+3+3) 1,1,2,3,4 scores 0 1,1,2,2,2 scores 0
Three of a kind: If there are three dice with the same number, the player scores the sum of these dice. For example, when placed on "three of a kind" 3,3,3,4,5 scores 9 (3+3+3) 3,3,4,5,6 scores 0 3,3,3,3,1 scores 0
Four of a kind: If there are four dice with the same number, the player scores the sum of these dice. For example, when placed on "four of a kind" 2,2,2,2,5 scores 8 (2+2+2+2) 2,2,2,5,5 scores 0 2,2,2,2,2 scores 0
Small straight: When placed on "small straight", if the dice read 1,2,3,4,5, the player scores 15 (the sum of all the dice.
Large straight: When placed on "large straight", if the dice read 2,3,4,5,6, the player scores 20 (the sum of all the dice).
Full house: If the dice are two of a kind and three of a kind, the player scores the sum of all the dice. For example, when placed on "full house" 1,1,2,2,2 scores 8 (1+1+2+2+2) 2,2,3,3,4 scores 0 4,4,4,4,4 scores 0