jdneo

摘要： 题目：Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must close in the corre... 阅读全文

摘要： 题目：Given a non-negative number represented as an array of digits, plus one to the number.The digits are stored such that the most significant digit is... 阅读全文