@windate3411/utils

Descripition

This package contains vary of functions I found myself used quite often while dealing with leetcode questions. Feel free to let me know what's on your mind :D

Install

npm install @windate3411/utils

Basic Usages

const utils = require("@windate3411/utils")

uitls.isPrime(4);
//false

uitls.countElement([1,4,3,2,2,5,7,6])
//{ '1': 1, '2': 2,
    '3': 1, '4': 1, 
    '5': 1, '6': 1, 
    '7': 1 }

uitls.permutaion([1,2,3])
//[ [ 1, 2, 3 ],
  [ 1, 3, 2 ],
  [ 2, 1, 3 ],
  [ 2, 3, 1 ],
  [ 3, 1, 2 ],
  [ 3, 2, 1 ] ]

Table of contents

function	description	params type	return data type
isPrime(num)	check if num is a prime number	number	boolean
countPrime(num)	count how many prime numbers between 0 and num	number	number
countElement(arr)	count elements in the array and return an object	array	object
combination(m,n)	return the number of combinations given C(m,n)	number	number
fraction(num)	return the fraction of num	number	number
permutaion(arr)	return the permutaions of given arr	array	array
objectSort(obj)	return sorted object alphabetically	object	object

Author

Danny Wang