Commit 81ba695

committed

feat: maxChars function

1 parent 4fd0e10 commit 81ba695Copy full SHA for 81ba695

File tree

+66

-0

lines changed

+66

-0

lines changed

Lines changed: 52 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,52 @@`
	`1`	`+// --- Task`
	`2`	`+// Given a string, return the character that is most commonly used in the string.`
	`3`	`+`
	`4`	`+// --- Examples`
	`5`	`+// maxChar("abcccccccd") === "c"`
	`6`	`+// maxChar("apple 1231111") === "1"`
	`7`	`+`
	`8`	`+`
	`9`	`+// #1 Solution`
	`10`	`+// export const maxChar = (str: string): string => {`
	`11`	`+// const charsObj: Record<string, number> = {};`
	`12`	`+`
	`13`	`+// for (let char of str) {`
	`14`	`+// charsObj[char] = charsObj[char] + 1 \|\| 1;`
	`15`	`+// }`
	`16`	`+`
	`17`	`+// const sortedEntries = Object.entries(charsObj).sort((a, b) => a[1] - b[1]);`
	`18`	`+`
	`19`	`+// return sortedEntries[sortedEntries.length - 1][0];`
	`20`	`+// }`
	`21`	`+`
	`22`	`+`
	`23`	`+// max = 0;`
	`24`	`+/*`
	`25`	`+ 'hello'`
	`26`	`+ {`
	`27`	`+ h: 1,`
	`28`	`+ e: 1,`
	`29`	`+ l: 2,`
	`30`	`+ o: 1,`
	`31`	`+ }`
	`32`	`+*/`
	`33`	`+`
	`34`	`+`
	`35`	`+export const maxChar = (str: string): string => {`
	`36`	`+ const charsObj: Record<string, number> = {};`
	`37`	`+ let max: number = 0;`
	`38`	`+ let maxChar: string = '';`
	`39`	`+`
	`40`	`+ for (let char of str) {`
	`41`	`+ charsObj[char] = charsObj[char] + 1 \|\| 1;`
	`42`	`+ }`
	`43`	`+`
	`44`	`+ for (let key in charsObj) {`
	`45`	`+ if (charsObj[key] > max) { // 2 > 1`
	`46`	`+ max = charsObj[key]; // max = 2`
	`47`	`+ maxChar = key; // maxChar = 'l'`
	`48`	`+ }`
	`49`	`+ }`
	`50`	`+`
	`51`	`+ return maxChar;`
	`52`	`+}`

Lines changed: 14 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,14 @@`
	`1`	`+import { maxChar } from '.';`
	`2`	`+`
	`3`	`+test('maxChar function exists', () => {`
	`4`	`+ expect(maxChar).toBeDefined();`
	`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`	`+});`

Comments

(0)