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题目：Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 解题思路：罗马数字的构成规则是： 相同的数字连写，所表示的数等于这些数字相加得 阅读全文
posted @ 2016-04-19 18:49
CodingGirl121
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题目：Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the 阅读全文
posted @ 2016-04-19 18:05
CodingGirl121
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题目： Given two strings s and t, write a function to determine if t is an anagram of s. For example,s = "anagram", t = "nagaram", return true.s = "rat", 阅读全文
posted @ 2016-04-19 18:00
CodingGirl121
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题目：Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements. For example, 阅读全文
posted @ 2016-04-19 16:49
CodingGirl121
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题目：You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 s 阅读全文
posted @ 2016-04-19 16:35
CodingGirl121
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题目：Given an integer (signed 32 bits), write a function to check whether it is a power of 4. Example: Given num = 16, return true. Given num = 5, retur 阅读全文
posted @ 2016-04-19 15:35
CodingGirl121
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