Add test data of Cross the Maze
Add solution by dreamoon of Cross the Maze
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Add solution by darknife of Ration Number Tree
Add solution by dreamoon of Ration Number Tree
Add solution by springegg of Ration Number Tree
Add test data of Rational Numeber Tree
Add solution by springegg of Read Phone Number
Add solution by darknife of Sorting
Add solution by dreamoon of Sorting
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Add test data of sorting
Add solution by darknife of SpaceshipDefence
Add solution by dreamoon of SpaceshipDefence
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Add test data of Spaceship Defence