tdd.md

Problems

Truncate A in first 2 positions of a String

• "ABCD" => "BCD", "AACD"=> "CD", "BACD"=>"BCD", "AAAA" => "AA", "MNAA"=>"MNAA"

Check if first two and last two characters in the string are the same.

• ""=>false, "A"=>false, "AB"=>true, "ABC"=>false, "AAA"=>true, "ABCAB"=>true, "ABCDEBA"=>false

Hint : substring method.

Bowling Kata

Popular kata popularized by Uncle Bob

• http://butunclebob.com/ArticleS.UncleBob.TheBowlingGameKata

• 10 Bowling Pins

• Each Game has 10 frames

• Each frame has upto 2 rolls

  • Base score is sum of pins knocked down in 2 rolls

• Bonus Points

  • Spare
    • You knock down all 10 pins in your 2 rolls
    • You get double points for your next roll
  • Strike
    • You knock all 10 pins in your first roll
    • You get double points for your next two rolls
  • In 10th frame, you can have three rolls if you roll a Spare or a Strike

• Example 1 : 2,2|4,5|4,5|4,5|2,5

  • Score = 2+2+4+5+4+5+4+5+2+5

• Example 2 : 5,5|4,6|3, 7|6,4|1,1

  • Score = 5+9+4+9+3+13+6+5+1+1

• Example 3 : 10|10|10|10|1,1

  • Score = 30+30+21+12+2

Design

• Create a class Game with methods void roll(int pins) and int score()