seyjs - 博客园

2020年3月1日

【leetcode】1361. Validate Binary Tree Nodes

摘要：题目如下： You have n binary tree nodes numbered from 0 to n - 1 where node i has two children leftChild[i] and rightChild[i], return true if and only if a 阅读全文

posted @ 2020-03-01 15:02 seyjs 阅读(562) 评论(0) 推荐(0) 编辑

【leetcode】1360. Number of Days Between Two Dates

摘要：题目如下： Write a program to count the number of days between two dates. The two dates are given as strings, their format is YYYY-MM-DD as shown in the ex 阅读全文

posted @ 2020-03-01 14:59 seyjs 阅读(246) 评论(0) 推荐(0) 编辑

2020年2月23日

【leetcode】1359. Count All Valid Pickup and Delivery Options

摘要：题目如下： Given n orders, each order consist in pickup and delivery services. Count all valid pickup/delivery possible sequences such that delivery(i) is 阅读全文

posted @ 2020-02-23 15:18 seyjs 阅读(369) 评论(0) 推荐(0) 编辑

【leetcode】1357. Apply Discount Every n Orders

摘要：题目如下： There is a sale in a supermarket, there will be a discount every n customer.There are some products in the supermarket where the id of the i-th 阅读全文

posted @ 2020-02-23 15:09 seyjs 阅读(296) 评论(0) 推荐(0) 编辑

【leetcode】1356. Sort Integers by The Number of 1 Bits

摘要：题目如下： Given an integer array arr. You have to sort the integers in the array in ascending order by the number of 1's in their binary representation an 阅读全文

posted @ 2020-02-23 15:07 seyjs 阅读(371) 评论(0) 推荐(0) 编辑

【leetcode】1354. Construct Target Array With Multiple Sums

摘要：题目如下： Given an array of integers target. From a starting array, A consisting of all 1's, you may perform the following procedure : let x be the sum of 阅读全文

posted @ 2020-02-23 15:06 seyjs 阅读(289) 评论(0) 推荐(0) 编辑

【leetcode】1352. Product of the Last K Numbers

摘要：题目如下： Implement the class ProductOfNumbers that supports two methods: 1. add(int num) Adds the number num to the back of the current list of numbers. 阅读全文

posted @ 2020-02-23 15:01 seyjs 阅读(302) 评论(0) 推荐(0) 编辑

2020年2月19日

【leetcode】1351. Count Negative Numbers in a Sorted Matrix

摘要：题目如下： Given a m * n matrix grid which is sorted in non-increasing order both row-wise and column-wise. Return the number of negative numbers in grid. 阅读全文

posted @ 2020-02-19 09:12 seyjs 阅读(344) 评论(0) 推荐(0) 编辑

2020年2月9日

【leetcode】1342. Number of Steps to Reduce a Number to Zero

摘要：题目如下： Given a non-negative integer num, return the number of steps to reduce it to zero. If the current number is even, you have to divide it by 2, ot 阅读全文

posted @ 2020-02-09 17:31 seyjs 阅读(369) 评论(0) 推荐(0) 编辑

【leetcode】1343. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold

摘要：题目如下： Given an array of integers arr and two integers k and threshold. Return the number of sub-arrays of size k and average greater than or equal to 阅读全文

posted @ 2020-02-09 17:28 seyjs 阅读(193) 评论(0) 推荐(0) 编辑

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