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Permutation SequenceTotal Accepted:44618Total Submissions:187104Difficulty:MediumThe set[1,2,3,…,n]contains a total ofn! unique permutations.By listin... 阅读全文
posted @ 2015-12-18 23:57
zengzy
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Perfect SquaresTotal Accepted:18854Total Submissions:63048Difficulty:MediumGiven a positive integern, find the least number of perfect square numbers ... 阅读全文
posted @ 2015-12-18 19:48
zengzy
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Factorial Trailing ZeroesTotal Accepted:44612Total Submissions:144778Difficulty:EasyGiven an integern, return the number of trailing zeroes inn!.Note:... 阅读全文
posted @ 2015-12-18 18:38
zengzy
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Excel Sheet Column TitleTotal Accepted:45878Total Submissions:230128Difficulty:EasyGiven a positive integer, return its corresponding column title as ... 阅读全文
posted @ 2015-12-18 18:06
zengzy
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Excel Sheet Column NumberTotal Accepted:55771Total Submissions:142875Difficulty:EasyRelated to questionExcel Sheet Column TitleGiven a column title as... 阅读全文
posted @ 2015-12-18 17:03
zengzy
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Palindrome NumberTotal Accepted:95552Total Submissions:318732Difficulty:EasyDetermine whether an integer is a palindrome. Do this without extra space.... 阅读全文
posted @ 2015-12-18 16:54
zengzy
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Kth Largest Element in an ArrayTotal Accepted:32668Total Submissions:109273Difficulty:MediumFind thekth largest element in an unsorted array. Note tha... 阅读全文
posted @ 2015-12-18 16:39
zengzy
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Flatten Binary Tree to Linked ListTotal Accepted:68105Total Submissions:228885Difficulty:MediumGiven a binary tree, flatten it to a linked list in-pla... 阅读全文
posted @ 2015-12-18 15:05
zengzy
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Serialize and Deserialize Binary TreeTotal Accepted:6782Total Submissions:27834Difficulty:MediumSerialization is the process of converting a data stru... 阅读全文
posted @ 2015-12-18 14:35
zengzy
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Binary Tree Maximum Path SumTotal Accepted:55016Total Submissions:246213Difficulty:HardGiven a binary tree, find the maximum path sum.For this problem... 阅读全文
posted @ 2015-12-18 13:30
zengzy
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Binary Tree Postorder TraversalTotal Accepted:82814Total Submissions:244246Difficulty:HardGiven a binary tree, return thepostordertraversal of its nod... 阅读全文
posted @ 2015-12-18 10:28
zengzy
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Convert Sorted Array to Binary Search TreeTotal Accepted:61516Total Submissions:173462Difficulty:MediumGiven an array where elements are sorted in asc... 阅读全文
posted @ 2015-12-18 10:08
zengzy
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Binary Tree Zigzag Level Order TraversalTotal Accepted:49079Total Submissions:179977Difficulty:MediumGiven a binary tree, return thezigzag level order... 阅读全文
posted @ 2015-12-18 09:57
zengzy
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