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197 lines (165 loc) · 4.06 KB
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function firstLetter(inputString) {
if (inputString) {
return inputString[0];
}
else {
return undefined;
}
}
function lastLetter(inputString) {
if (inputString) {
return inputString.slice(-1);
}
else {
return undefined;
}
}
function letterAtPosition(inputString, position) {
if (inputString) {
return inputString[position];
}
}
function addTwoNumbers(num1, num2) {
var result = num1 + num2;
if(isNaN(num1)||isNaN(num2)){
return undefined;
}
else {
return num1 + num2;
}
}
function multiplyTwoNumbers(num1, num2) {
var result = num1 * num2;
if(isNaN(num1)||isNaN(num2)){
return undefined;
}
else {
return num1 * num2;
}
}
function calculator(operation, num1, num2) {
if (operation === "add"){
return (num1 + num2);
}
if (operation === "sub"){
return (num1 - num2);
}
if (operation === "mult"){
return (num1 * num2);
}
if (operation === "div"){
return (num1 / num2);
}
else {
return undefined;
}
}
function repeatString(inputString, numRepetitions) {
if (numRepetitions <= 0) {
return "";
}
else if (numRepetitions) {
return inputString.repeat(numRepetitions);
}
else {
return undefined;
}
}
function reverseString(inputString) {
var splitString = inputString.split('');
var reverseArray = splitString.reverse();
var joinArray = reverseArray.join('');
return joinArray;
}
function longestWord(inputString) {
var splitString = inputString.split(' ');
console.log(splitString);
var longWord = "";
for (var i= 0; i < splitString.length; i++){
if(splitString[i].length > longWord.length){
longWord = splitString[i];
}
}
return longWord;
}
function capitalize(inputString) {
if (inputString)
return inputString.toUpperCase();
}
function sumOfNumbers(arrayOfNumbers) {
if (typeof arrayOfNumbers !== "object") {
return
}
var total = 0;
for (var i = 0; i < arrayOfNumbers.length; i++){
if(typeof arrayOfNumbers[i] !== "number") {
return
}
total += arrayOfNumbers[i];
}
return total;
}
function uniqueElements(array1, array2) {
var arrayTemp = [];
if (typeof array1 != "object" && typeof array2 != "object") {
return;
}
for (var i = 0; i < array1.length; i++) {
if (array2.indexOf(array1[i]) < 0) {
arrayTemp.push(array1[i])
}
}
for (var j = 0; j < array2.length; j++) {
if (array1.indexOf(array2[j]) < 0) {
arrayTemp.push(array2[j])
}
}
return arrayTemp;
}
function isPalindrome(inputString) {
inputString = inputString.replace(/[^a-zA-Z ]/g, "").split(" ").join("").toLowerCase()
var stringLength = inputString.length;
for (var i = 0; i < stringLength / 2; i++) {
if (inputString.charAt(i) !== inputString.charAt(stringLength - 1 - i)) {
return false;
}
}
return true;
}
function wrapCharacter(inputString) {
var array = inputString.split("")
for (var i = 0; i < array.length; i++) {
if (i % 40 === 0 && i > 0) {
if (array[i] === " ") {
array[i] = "\n"
}
else {
array[i] += "\n"
}
}
}
return array.join("")
}
function wrapWord(inputString) {
}
function bubbleSort(arrayOfNumbers) {
}
/***** DO NOT EDIT AFTER THIS LINE *****/
module.exports = {
firstLetter: firstLetter,
lastLetter: lastLetter,
letterAtPosition: letterAtPosition,
addTwoNumbers: addTwoNumbers,
multiplyTwoNumbers: multiplyTwoNumbers,
calculator: calculator,
repeatString: repeatString,
reverseString: reverseString,
longestWord: longestWord,
capitalize: capitalize,
sumOfNumbers: sumOfNumbers,
uniqueElements: uniqueElements,
isPalindrome: isPalindrome,
wrapCharacter: wrapCharacter,
wrapWord: wrapWord,
bubbleSort: bubbleSort
};