01 2020 档案
摘要：Given an array nums of n integers, are there elements a, b, c in numssuch that a + b + c = 0? Find all unique triplets in the array which gives the su
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摘要：Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. Example 1: Input: 1->2
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摘要：Given 3 positives numbers a, b and c. Return the minimum flips required in some bits of a and b to make ( a OR b == c ). (bitwise OR operation).Flip o
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摘要：Given an integer n. No-Zero integer is a positive integer which doesn't contain any 0 in its decimal representation. Return a list of two integers [A,
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摘要：You have a set of tiles, where each tile has one letter tiles[i]printed on it. Return the number of possible non-empty sequences of letters you can ma
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摘要：Design an Iterator class, which has: A constructor that takes a string characters of sorted distinctlowercase English letters and a number combination
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摘要：Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x. You should preserve the
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摘要：Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. Example: Note: 题目大意：给定一个数组，返回小标[i, j]的元素之和。 用途：在
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摘要：Given the array arr of positive integers and the array queries where queries[i] = [Li, Ri], for each query i compute the XOR of elements from Li to Ri
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摘要：Given a string s formed by digits ('0' - '9') and '#' . We want to map s to English lowercase characters as follows: Characters ('a' to 'i') are repre
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摘要：Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element. Example
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摘要：引言 很多情况下，我们可以将数据结果保存到txt文件中便于后续查看或者再处理，然而为了进行汇报、论文撰写等工作，我们将数据放入表格，为后续整理会提供极大的便利。我们可以利用pandas库进行numpy.ndarray数据保存到excel。 函数说明 pandas.DataFrame.to_excel
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