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摘要： Given a collection of intervals, merge all overlapping intervals. For example,Given [1,3],[2,6],[8,10],[15,18],return [1,6],[8,10],[15,18]. 先写comparat 阅读全文

摘要： Given an integer arrays, find a contiguous subarray which has the largest sum and length should be greater or equal to given length k.Return the large 阅读全文

摘要： Given an array of integers, find two non-overlapping subarrays which have the largest sum.The number in each subarray should be contiguous.Return the 阅读全文

摘要： Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [-2,1,-3,4,-1,2, 阅读全文

摘要： Implement pow(x, n). Example 1: Input: 2.00000, 10 Output: 1024.00000 Example 2: Input: 2.10000, 3 Output: 9.26100 1.二分法递归。 把pow(x,n)拆解为pow(x,n/2) 的平方 阅读全文

摘要： Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. private Comparator<ListNode> listComparator = new C 阅读全文

摘要： 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. 问清楚需不需要创 阅读全文

摘要： Given two words (start and end), and a dictionary, find all shortest transformation sequence(s) from start to end, such that: Notice All words have th 阅读全文

摘要： Given a string s and a dictionary of words dict, determine if s can be break into a space-separated sequence of one or more dictionary words. Example 阅读全文

摘要： Given a permutation which may contain repeated numbers, find its index in all the permutations of these numbers, which are ordered in lexicographical 阅读全文