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[LeetCode]22 Generate Parentheses
https://oj.leetcode.com/problems/generate-parentheses/http://fisherlei.blogspot.com/2012/12/leetcode-generate-parentheses.htmlpublicclassSolution{ publicList<String>generateParenthesis(intn){ //SolutionB: //returngenerateParenthesis_BruteForce(n); ..
分类:其他好文   时间:2015-01-02 16:12:32    阅读次数:137
[LeetCode]28 Implement strStr()
https://oj.leetcode.com/problems/implement-strstr/http://fisherlei.blogspot.com/2012/12/leetcode-implement-strstr.htmlpublicclassSolution{ publicintstrStr(Stringhaystack,Stringneedle){ //遍历haystack,对每一个字符,匹配needle if(haystack==null||needle==nu..
分类:其他好文   时间:2015-01-02 16:12:25    阅读次数:149
[LeetCode]24 Swap Nodes in Pairs
https://oj.leetcode.com/problems/swap-nodes-in-pairs/http://fisherlei.blogspot.com/2013/01/leetcode-swap-nodes-in-pairs.html/** *Definitionforsingly-linkedlist. *publicclassListNode{ *intval; *ListNodenext; *ListNode(intx){ *val=x; *next=null; *} *} */ publ..
分类:其他好文   时间:2015-01-02 16:12:21    阅读次数:151
[LeetCode]20 Valid Parentheses
https://oj.leetcode.com/problems/valid-parentheses/http://fisherlei.blogspot.com/2013/01/leetcode-valid-parentheses.htmlpublicclassSolution{ publicbooleanisValid(Strings) { if(s==null) returntrue; Stack<Character>stack=newStack<>(); for(charc:s..
分类:其他好文   时间:2015-01-02 16:12:14    阅读次数:99
[LeetCode]26 Remove Duplicates from Sorted Array
https://oj.leetcode.com/problems/remove-duplicates-from-sorted-array/http://fisherlei.blogspot.com/2012/12/leetcode-remove-duplicates-from-sorted.htmlpublicclassSolution{ publicintremoveDuplicates(int[]A){ if(A==null||A.length==0) return0;//Invalidinput. ..
分类:其他好文   时间:2015-01-02 16:12:07    阅读次数:118
[LeetCode]25 Reverse Nodes in k-Group
https://oj.leetcode.com/problems/reverse-nodes-in-k-group/http://fisherlei.blogspot.com/2012/12/leetcode-reverse-nodes-in-k-group.html/** *Definitionforsingly-linkedlist. *publicclassListNode{ *intval; *ListNodenext; *ListNode(intx){ *val=x; *next=null; *} ..
分类:其他好文   时间:2015-01-02 16:12:00    阅读次数:238
[LeetCode]23 Merge k Sorted Lists
https://oj.leetcode.com/problems/merge-k-sorted-lists/http://fisherlei.blogspot.com/2012/12/leetcode-merge-k-sorted-lists.html/** *Definitionforsingly-linkedlist. *publicclassListNode{ *intval; *ListNodenext; *ListNode(intx){ *val=x; *next=null; *} *} */ pu..
分类:其他好文   时间:2015-01-02 16:11:43    阅读次数:152
[LeetCode]31 Next Permutation
https://oj.leetcode.com/problems/next-permutation/http://fisherlei.blogspot.com/2012/12/leetcode-next-permutation.htmlpublicclassSolution{ publicvoidnextPermutation(int[]num){ //SolutionB nextPermutation_Math(num); //SolutionA //nextPermutation_AllPerms(..
分类:其他好文   时间:2015-01-02 16:11:11    阅读次数:93
[LeetCode]27 Remove Element
https://oj.leetcode.com/problems/remove-element/http://fisherlei.blogspot.com/2012/12/leetcode-remove-element.htmlpublicclassSolution{ publicintremoveElement(int[]A,intelem){ //Theordercanbechanged. //Use2pointers. //Onetoiteratethearray, //Onetocopythelas..
分类:其他好文   时间:2015-01-02 16:10:11    阅读次数:129
OJ刷题之《蚂蚁感冒》
题目描述 长100厘米的细长直杆子上有n只蚂蚁。它们的头有的朝左,有的朝右。每只蚂蚁都只能沿着杆子向前爬,速度是1厘米/秒。当两只蚂蚁碰面时,它们会同时掉头往相反的方向爬行。这些蚂蚁中,有1只蚂蚁感冒了。并且在和其它蚂蚁碰面时,会把感冒传染给碰到的蚂蚁。 请你计算,当所有蚂蚁都爬离杆子时,有多少只蚂蚁患上了感冒。 输入 第一行输入一个整数n (1< n < 50), 表示蚂蚁的总数。...
分类:其他好文   时间:2015-01-02 16:06:38    阅读次数:175
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