Commit 8a6f143

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Implement a solution for finding the most used char found in a given string, wrote tests

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Lines changed: 27 additions & 0 deletions

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	`1`	`+// --- Directions`
	`2`	`+// Given a string, return the character that is most`
	`3`	`+// commonly used in the string.`
	`4`	`+// --- Examples`
	`5`	`+// maxChar("abcccccccd") === "c"`
	`6`	`+// maxChar("apple 1231111") === "1"`
	`7`	`+`
	`8`	`+// Tips: Convert string to object where the keys are the character and values is the number of times the character has been found`
	`9`	`+`
	`10`	`+function maxChar(str) {`
	`11`	`+ // Generate object from string`
	`12`	`+ const charMap = {};`
	`13`	`+ let max = 0;`
	`14`	`+ let maxChar = "";`
	`15`	`+ for(let char of str) {`
	`16`	`+ charMap[char] = charMap[char] + 1 \|\| 1;`
	`17`	`+ }`
	`18`	`+ for (let char in charMap) {`
	`19`	`+ if(charMap[char] > max) {`
	`20`	`+ max = charMap[char];`
	`21`	`+ maxChar = char;`
	`22`	`+ }`
	`23`	`+ }`
	`24`	`+ return maxChar;`
	`25`	`+}`
	`26`	`+`
	`27`	`+module.exports = maxChar;`

Lines changed: 14 additions & 0 deletions

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	`1`	`+const maxChar = require('./index');`
	`2`	`+`
	`3`	`+test('maxChar function exists', () => {`
	`4`	`+ expect(typeof maxChar).toEqual('function');`
	`5`	`+});`
	`6`	`+`
	`7`	`+test('Finds the most frequently used char', () => {`
	`8`	`+ expect(maxChar('a')).toEqual('a');`
	`9`	`+ expect(maxChar('abcdefghijklmnaaaaa')).toEqual('a');`
	`10`	`+});`
	`11`	`+`
	`12`	`+test('Works with numbers in the string', () => {`
	`13`	`+ expect(maxChar('ab1c1d1e1f1g1')).toEqual('1');`
	`14`	`+});`

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