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Implement three solutions for solving reverse string problem, write tests

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	`1`	`+// --- Directions`
	`2`	`+// Given a string, return a new string with the reversed`
	`3`	`+// order of characters`
	`4`	`+// --- Examples`
	`5`	`+// reverse('apple') === 'leppa'`
	`6`	`+// reverse('hello') === 'olleh'`
	`7`	`+// reverse('Greetings!') === '!sgniteerG'`
	`8`	`+`
	`9`	`+`
	`10`	`+// Solution 1`
	`11`	`+// function reverse(str) {`
	`12`	`+// return str.split('').reverse().join('');`
	`13`	`+// }`
	`14`	`+`
	`15`	`+`
	`16`	`+// // Solution 2`
	`17`	`+// function reverse(str) {`
	`18`	`+// let reversed = "";`
	`19`	`+// for(let character of str) {`
	`20`	`+// reversed = character + reversed;`
	`21`	`+// }`
	`22`	`+// return reversed;`
	`23`	`+// }`
	`24`	`+`
	`25`	`+// Solution 3`
	`26`	`+function reverse(str) {`
	`27`	`+ return str.split("").reduce((rev, char) => char + rev, "")`
	`28`	`+}`
	`29`	`+`
	`30`	`+`
	`31`	`+module.exports = reverse;`

Lines changed: 13 additions & 0 deletions

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	`1`	`+const reverse = require('./index');`
	`2`	`+`
	`3`	`+test('Reverse function exists', () => {`
	`4`	`+ expect(reverse).toBeDefined();`
	`5`	`+});`
	`6`	`+`
	`7`	`+test('Reverse reverses a string', () => {`
	`8`	`+ expect(reverse('abcd')).toEqual('dcba');`
	`9`	`+});`
	`10`	`+`
	`11`	`+test('Reverse reverses a string', () => {`
	`12`	`+ expect(reverse(' abcd')).toEqual('dcba ');`
	`13`	`+});`

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