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Description:Given two binary trees, write a function to check if they are equal or not.Two binary trees are considered equal if they are structurally ... 阅读全文
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Description:Givenn, how many structurally uniqueBST's(binary search trees) that store values 1...n?For example,Givenn= 3, there are a total of 5 uniqu... 阅读全文
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Description:Given two sorted integer arraysnums1andnums2, mergenums2intonums1as one sorted array.Note:You may assume thatnums1has enough space (size t... 阅读全文
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Description:Given a sorted linked list, delete all nodes that have duplicate numbers, leaving onlydistinctnumbers from the original list.For example,G... 阅读全文
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Description:Given a sorted linked list, delete all duplicates such that each element appear onlyonce.For example,Given1->1->2, return1->2.Given1->1->2... 阅读全文