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We have a list of points on the plane. Find the K closest points to the origin (0, 0). (Here, the distance between two points on a plane is the Euclid 阅读全文
posted @ 2020-05-31 06:32
Schwifty
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Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. Example 1: Input: [0,1] Output: 2 Explanation: [0 阅读全文
posted @ 2020-05-27 07:20
Schwifty
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We write the integers of A and B (in the order they are given) on two separate horizontal lines. Now, we may draw connecting lines: a straight line co 阅读全文
posted @ 2020-05-26 06:51
Schwifty
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Return the root node of a binary search tree that matches the given preorder traversal. (Recall that a binary search tree is a binary tree where for e 阅读全文
posted @ 2020-05-25 06:27
Schwifty
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Given two lists of closed intervals, each list of intervals is pairwise disjoint and in sorted order. Return the intersection of these two interval li 阅读全文
posted @ 2020-05-24 01:07
Schwifty
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Given a string, sort it in decreasing order based on the frequency of characters. Example 1: Input: "tree" Output: "eert" Explanation: 'e' appears twi 阅读全文
posted @ 2020-05-22 23:05
Schwifty
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A sequence of number is called arithmetic if it consists of at least three elements and if the difference between any two consecutive elements is the 阅读全文
posted @ 2020-05-21 08:59
Schwifty
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Given a non-empty array of integers, return the third maximum number in this array. If it does not exist, return the maximum number. The time complexi 阅读全文
posted @ 2020-05-21 08:36
Schwifty
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Given a string which consists of lowercase or uppercase letters, find the length of the longest palindromes that can be built with those letters. This 阅读全文
posted @ 2020-05-21 08:15
Schwifty
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Given an integer, write an algorithm to convert it to hexadecimal. For negative integer, two’s complement method is used. Note: All letters in hexadec 阅读全文
posted @ 2020-05-20 07:51
Schwifty
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