How to Determine the Armstrong Number?

  • 时间：2020-09-21 09:15:21
  • 分类：网络文摘
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The k-digit number N is an Armstrong number if and only if the k-th power of each digit sums to N. Given a positive integer N, return true if and only if it is an Armstrong number. Example 1: Input: 153 Output: true Explanation: 153 is a 3... ...

How to Determine the Leap Year?

  • 时间：2020-09-21 09:15:21
  • 分类：网络文摘
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A Leap year occurs mostly every 4 years, but every 100 years, we skip a leap year, unless it is divisible by 400. Leap Year Algorithm if (year is not divisible by 4) then (it is a common year) else if (year is not divisible by 100) then (i... ...

How to Compute the Number of Days in a Month?

  • 时间：2020-09-21 09:15:21
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Given a year Y and a month M, return how many days there are in that month. Example 1: Input: Y = 1992, M = 7 Output: 31 Example 2: Input: Y = 2000, M = 2 Output: 29 Example 3: Input: Y = 1900, M = 2 Output: 28 Note: 1583 <= Y <= 21... ...

The Variable Expansion Algorithm Using Regular Expression in Jav

  • 时间：2020-09-21 09:15:21
  • 分类：网络文摘
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NodeJs / Javascript Let’s say, if we want to expand strings that contain dynamic variables, we can use regular expression to do this easily. 1 2 3 4 5 const varContent = {   VAR: "World", }   console.l... ...

Maximize Sum Of Array After K Negations using Greedy Algorithm v

  • 时间：2020-09-21 09:15:21
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Given an array A of integers, we must modify the array in the following way: we choose an i and replace A[i] with -A[i], and we repeat this process K times in total. (We may choose the same index i multiple times.) Return the largest possi... ...

Passengers Pick-up and Drop-off Algorithms (Car Pooling) via Gre

  • 时间：2020-09-21 09:15:21
  • 分类：网络文摘
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You are driving a vehicle that has capacity empty seats initially available for passengers. The vehicle only drives east (ie. it cannot turn around and drive west.) Given a list of trips, trip[i] = [num_passengers, start_location, end_loca... ...

Beginner’s Guide to the zip() function in Python3

  • 时间：2020-09-21 09:15:21
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The zip function in Python 3 takes two parameters, and generate an iterator that contains tuples. Each tuple takes a value from each input – which can be tuples or arrays. It can be illustrated as follows: python3-zip-function Python... ...

Using Greedy Algorithm to Fix the Broken Calculator

  • 时间：2020-09-21 09:15:21
  • 分类：网络文摘
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On a broken calculator that has a number showing on its display, we can perform two operations: Double: Multiply the number on the display by 2, or; Decrement: Subtract 1 from the number on the display. Initially, the calculator is displ... ...

The Subsequence Algorithm for Two Strings – How to Check i

  • 时间：2020-09-21 09:15:21
  • 分类：网络文摘
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Given a string s and a string t, check if s is subsequence of t. You may assume that there is only lower case English letters in both s and t. t is potentially a very long (length ~= 500,000) string, and s is a short string (<=100). A s... ...

4Sum – Find Unique Quadruplets that Sum to Target using O(

  • 时间：2020-09-21 09:15:21
  • 分类：网络文摘
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Given an array nums of n integers and an integer target, are there elements a, b, c, and d in nums such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target. Note: The solution set must not co... ...