摘要： You are given coins of different denominations and a total amount of money amount. Write a function to compute the fewest number of coins that you nee 阅读全文

摘要： The Fibonacci numbers, commonly denoted F(n) form a sequence, called the Fibonacci sequence, such that each number is the sum of the two preceding one 阅读全文

摘要： Write a function that reverses a string. The input string is given as an array of characters char[]. Do not allocate extra space for another array, yo 阅读全文