摘要：
Reverse a singly linked list./** * Definition for singly-linked list. * struct ListNode { * int val; * struct ListNode *next; * }; */struct Li... 阅读全文
随笔档案-2016年01月
13_Roman to Integer
2016-01-13 15:05 by FTD_W, 182 阅读, 收藏,
摘要：
Given a roman numeral, convert it to an integer.Input is guaranteed to be within the range from 1 to 3999.罗马数字转化为阿拉伯数字I 1X 10C 100M 1000V 5L 50 ... 阅读全文
191_Number of 1 Bits
2016-01-13 14:38 by FTD_W, 136 阅读, 收藏,
摘要：
Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as theHamming weight).For example, the 32-bit in... 阅读全文
318_Maximum Product of Word Lengths
2016-01-12 16:12 by FTD_W, 491 阅读, 收藏,
摘要：
Given a string arraywords, find the maximum value oflength(word[i]) * length(word[j])where the two words do not share common letters. You may assume t... 阅读全文
235_Lowest Common Ancestor of a Binary Search Tree
2016-01-05 15:28 by FTD_W, 178 阅读, 收藏,
摘要：
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST.According to thedefinition of LCA on Wikipedia: ... 阅读全文
319_Bulb Switcher
2016-01-04 13:24 by FTD_W, 393 阅读, 收藏,
摘要：
There arenbulbs that are initially off. You first turn on all the bulbs. Then, you turn off every second bulb. On the third round, you toggle every th... 阅读全文
268_Missing Number
2016-01-03 10:29 by FTD_W, 272 阅读, 收藏,
摘要：
Given an array containingndistinct numbers taken from0, 1, 2, ..., n, find the one that is missing from the array.For example,Givennums=[0, 1, 3]retur... 阅读全文
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