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217. Contains DuplicateGiven an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at... 阅读全文
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171. Excel Sheet Column NumberRelated to questionExcel Sheet Column TitleGiven a column title as appear in an Excel sheet, return its corresponding co... 阅读全文
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242. Valid AnagramTotal Accepted:49956Total Submissions:125369Difficulty:EasyGiven two stringssandt, write a function to determine iftis an anagram of... 阅读全文
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100. Same TreeTotal Accepted:102505Total Submissions:241539Difficulty:EasyGiven two binary trees, write a function to check if they are equal or not.T... 阅读全文
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237. Delete Node in a Linked ListTotal Accepted:53467Total Submissions:121930Difficulty:EasyWrite a function to delete a node (except the tail) in a s... 阅读全文
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104. Maximum Depth of Binary TreeTotal Accepted:111336Total Submissions:238298Difficulty:EasyGiven a binary tree, find its maximum depth.The maximum d... 阅读全文