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Commit d70595e

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Merge branch 'master' into add-trapping-water
2 parents 826d75b + d272b1e commit d70595e

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-1047
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130 files changed

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‎.prettierrc‎

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{
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"arrowParens": "always",
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"bracketSpacing": true,
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"endOfLine": "lf",
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"insertPragma": false,
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"printWidth": 80,
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"proseWrap": "preserve",
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"quoteProps": "as-needed",
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"requirePragma": false,
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"semi": false,
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"singleQuote": true,
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"tabWidth": 2,
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"trailingComma": "none",
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"useTabs": false
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}
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‎Ciphers/ROT13.js‎

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/**
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* Transcipher a ROT13 cipher
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* @param {String} text - string to be encrypted
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* @return {String} - decrypted string
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*/
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const transcipher = (text) => {
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const originalCharacterList = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
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const toBeMappedCharaterList = 'NOPQRSTUVWXYZABCDEFGHIJKLMnopqrstuvwxyzabcdefghijklm'
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const index = x => originalCharacterList.indexOf(x)
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const replace = x => index(x) > -1 ? toBeMappedCharaterList[index(x)] : x
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return text.split('').map(replace).join('')
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}
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(() => {
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const messageToBeEncrypted = 'The quick brown fox jumps over the lazy dog'
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console.log(`Original Text = "${messageToBeEncrypted}"`)
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const rot13CipheredText = transcipher(messageToBeEncrypted)
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console.log(`Ciphered Text = "${rot13CipheredText}"`)
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const rot13DecipheredText = transcipher(rot13CipheredText)
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console.log(`Deciphered Text = "${rot13DecipheredText}"`)
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})()

‎Conversions/BinaryToDecimal.js‎

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functionbinaryToDeicmal(binaryNumber) {
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constbinaryToDecimal=(binaryString)=> {
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let decimalNumber = 0
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const binaryDigits = binaryNumber.split('').reverse() // Splits the binary number into reversed single digits
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const binaryDigits = binaryString.split('').reverse() // Splits the binary number into reversed single digits
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binaryDigits.forEach((binaryDigit, index) => {
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decimalNumber += binaryDigit * (Math.pow(2, index)) // Summation of all the decimal converted digits
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})
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console.log(`Decimal of ${binaryNumber} is ${decimalNumber}`)
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console.log(`Decimal of ${binaryString} is ${decimalNumber}`)
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return decimalNumber
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}
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binaryToDeicmal('111001')
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binaryToDeicmal('101')
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(() => {
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binaryToDecimal('111001')
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binaryToDecimal('101')
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})()

‎Conversions/HexToRGB.js‎

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function hexStringToRGB (hexString) {
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var r = (hexString.substring(1,3)).toUpperCase()
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var g = hexString.substring(3,5).toUpperCase()
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var b = hexString.substring(5,7).toUpperCase()
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var r = hexString.substring(0,2)
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var g = hexString.substring(2,4)
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var b = hexString.substring(4,6)
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r = parseInt(r, 16)
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g = parseInt(g, 16)
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return obj
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}
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console.log(hexStringToRGB('javascript rock !!'))
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console.log(hexStringToRGB('ffffff'))

‎Conversions/RGBToHex.js‎

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function RGBToHex (r, g, b) {
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if (
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typeof r !== 'number' ||
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typeof g !== 'number' ||
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typeof b !== 'number'
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) {
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throw new TypeError('argument is not a Number')
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}
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const toHex = n => (n || '0').toString(16).padStart(2, '0')
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return `#${toHex(r)}${toHex(g)}${toHex(b)}`
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}
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console.log(RGBToHex(255, 255, 255) === '#ffffff')
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console.log(RGBToHex(255, 99, 71) === '#ff6347')

‎DIRECTORY.md‎

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/**
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* A LinkedList based solution for Detect a Cycle in a list
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* https://en.wikipedia.org/wiki/Cycle_detection
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*/
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function main () {
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/*
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Problem Statement:
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Given head, the head of a linked list, determine if the linked list has a cycle in it.
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Note:
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* While Solving the problem in given link below, don't use main() function.
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* Just use only the code inside main() function.
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* The purpose of using main() function here is to aviod global variables.
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Link for the Problem: https://leetcode.com/problems/linked-list-cycle/
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*/
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const head = '' // Reference to head is given in the problem. So please ignore this line
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let fast = head
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let slow = head
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while (fast != null && fast.next != null && slow != null) {
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fast = fast.next.next
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slow = slow.next
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if (fast === slow) {
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return true
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}
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}
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return false
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}
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main()

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