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You have two numbers represented by a linked list, where each node contains a single digit. The digits are stored in reverse order, such that the 1’s ... 阅读全文
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参考http://www.cnblogs.com/jdflyfly/p/3819162.html 阅读全文
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Implement an algorithm to delete a node in the middle of a single linked list, given only access to that node. 阅读全文
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Implement an algorithm to find the kth to last element of a singly linked list. 阅读全文
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Write code to remove duplicates from an unsorted linked list. 阅读全文
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Assume you have a method isSubstring which checks if one word is a substring of another. Given two strings, s1 and s2, write code to check if s2 is a rotation of s1 using only one call to isSubstring ( i.e., “waterbottle” is a rotation of “erbottlewat”). 阅读全文
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Write an algorithm such that if an element in an MxN matrix is 0, its entire row and column is set to 0. 阅读全文
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Given an image represented by an NxN matrix, where each pixel in the image is 4 bytes, write a method to rotate the image by 90 degrees. Can you do this in place? 阅读全文
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Given an input string, reverse the string word by word. 阅读全文
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Evaluate the value of an arithmetic expression in Reverse Polish Notation. 阅读全文