leetcode-ruby

Minitest is used for unit test

gem install minitest

Ruby-Graphviz library needs to be installed in order to use drawTree() function

gem install graphviz

gem install ruby-graphviz

For a binary tree, like below

the function will generate a png file in the same directory as below:

Name		Name	Last commit message	Last commit date
Latest commit History 14 Commits
.gitignore		.gitignore
README.md		README.md
best_time_to_buy_sell_stock.rb		best_time_to_buy_sell_stock.rb
best_time_to_buy_sell_stockII.rb		best_time_to_buy_sell_stockII.rb
binary_tree_inorder_traversal.rb		binary_tree_inorder_traversal.rb
binary_tree_preorder_traversal.rb		binary_tree_preorder_traversal.rb
binarytree.rb		binarytree.rb
excel_sheet_column_number.rb		excel_sheet_column_number.rb
excel_sheet_column_title.rb		excel_sheet_column_title.rb
integer_to_roman.rb		integer_to_roman.rb
list.rb		list.rb
remove_nth_node_from_end_of_list.rb		remove_nth_node_from_end_of_list.rb
roman_to_integer.rb		roman_to_integer.rb
rotate_array.rb		rotate_array.rb

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