摘要：
Sometimes it's quite useful to write pseudo codes for problems. Actually you can write the necessary steps to solve a particular problem. In this prob 阅读全文
摘要：
You are building a house. You'd prefer if all the walls have a precise right angle relative to the ground, but you have no device to measure angles. A 阅读全文
摘要：
Zibon just started his courses in Computer science. After having some lectures on programming courses he fell in love with strings. He started to play 阅读全文