2015年11月5日
4Sum 解答
摘要： QuestionGiven an arraySofnintegers, are there elementsa,b,c, anddinSsuch thata+b+c+d= target? Find all unique quadruplets in the array which gives the... 阅读全文
posted @ 2015-11-05 22:56 树獭君 阅读(215) 评论(0) 推荐(0)
Reverse Nodes in k-Group 解答
摘要： QuestionGiven a linked list, reverse the nodes of a linked listkat a time and return its modified list.If the number of nodes is not a multiple ofkthe... 阅读全文
posted @ 2015-11-05 21:59 树獭君 阅读(115) 评论(0) 推荐(0)
Swap Nodes in Pairs 解答
摘要： QuestionGiven a linked list, swap every two adjacent nodes and return its head.For example,Given1->2->3->4, you should return the list as2->1->4->3.Yo... 阅读全文
posted @ 2015-11-05 11:31 树獭君 阅读(171) 评论(0) 推荐(0)
Sum Root to Leaf Numbers 解答
摘要： QuestionGiven a binary tree containing digits from0-9only, each root-to-leaf path could represent a number.An example is the root-to-leaf path1->2->3w... 阅读全文
posted @ 2015-11-05 09:09 树獭君 阅读(171) 评论(0) 推荐(0)
Sum 类型题目总结
摘要： Sum类的题目一般这样：input: nums[], targetoutput: satisfied arrays/ lists/ number拿到题目，首先分析：1. 是几个数的sum2. sum是要求等于target还是小于还是大于还是closest3. 返回的是原数组下标还是其他对于这类题目，... 阅读全文
posted @ 2015-11-05 02:26 树獭君 阅读(443) 评论(0) 推荐(0)