豆腐脑是咸的

DescriptionHere is a famous story in Chinese history. That was about 2300 years ago. General Tian Ji was a high official in the country Qi. He likes to play horse racing with the king and others

DescriptionThere is a square wall which is made of n*n small square bricks. Some bricks are white while some bricks are yellow. Bob is a painter and he wants to paint all the bricks yellow. But th

在字符串数组输入时运用如下