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题目: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 identical... 阅读全文
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题目:Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in... 阅读全文
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题目:Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn't ... 阅读全文
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题目:Given a sorted array, remove the duplicates in place such that each element appear onlyonceand return the new length.Do not allocate extra space fo... 阅读全文
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题目:Given a linked list, swap every two adjacent nodes and return its head.For example,Given1->2->3->4, you should return the list as2->1->4->3.Your al... 阅读全文
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题目:Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists. 1 str... 阅读全文