题目
Given a digit string, return all possible letter combinations that the number could represent.
A mapping of digit to letters (just like on the telephone buttons) is given below.
In...
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其他好文 时间:
2014-06-18 12:03:16
阅读次数:
227
Given two integers n and k, return all possible combinations of k numbers out of 1 ... n.
For example,
If n = 4 and k = 2, a solution is:
[
[2,4],
[3,4],
[2,3],
[1,2],
[1,3],
[1,4],
]...
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其他好文 时间:
2014-06-18 11:41:52
阅读次数:
156
题目
Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.
For example, given n = 3, a solution set is:
"((()))", "(()())", "(())()", "()...
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其他好文 时间:
2014-06-17 22:59:06
阅读次数:
223
Given a string containing only digits, restore it by returning all possible valid IP address combinations.
For example:
Given "25525511135",
return ["255.255.11.135", "255.255.111.35"].
(Order do...
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其他好文 时间:
2014-06-16 19:24:42
阅读次数:
248
题目
Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums
to T.
The same repeated number may be chosen from C un...
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其他好文 时间:
2014-06-15 20:00:18
阅读次数:
185
题目
Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers
sums to T.
Each number in C may only be used once in...
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其他好文 时间:
2014-06-15 19:24:21
阅读次数:
229
题目
Given two integers n and k, return all possible combinations of k numbers out of 1 ... n.
For example,
If n = 4 and k = 2, a solution is:
[
[2,4],
[3,4],
[2,3],
[1,2],
[1,3],...
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其他好文 时间:
2014-06-15 14:10:54
阅读次数:
239
像这种DFS的题目,常见的写法无外乎两种,使用recursion,
或者用Stack。本文采用了stack的方式。做完后积累的经验有:像这种在一个ArrayList里面罗列可能的path的题目,recursion的参数一般包括:包含最终结果的集合(ArrayList),input(String),递...
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其他好文 时间:
2014-06-13 08:34:10
阅读次数:
220
给定一个整数序列,求解一个子序列,子序列之和等于给定目标值。子序列满足以下条件:
1)子序列是有序的
2)子序列的元素个数不限,可以是给定元素的重复元素。
3)结果中的子序列是唯一的
原题描述如下:
Given a set of candidate numbers (C) and a target number (T), find all unique combinations ...
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其他好文 时间:
2014-06-11 06:26:03
阅读次数:
302
原题地址:https://oj.leetcode.com/problems/letter-combinations-of-a-phone-number/题意:Given
a digit string, return all possible letter combinations that the ...
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编程语言 时间:
2014-06-10 16:40:57
阅读次数:
223