Commit 6f1edd1

authored

merge: Add test Case for Palindrome Recursive (#855)

* Add test Case for Palindrome Recursive * Update Checks

1 parent 027c0d6 commit 6f1edd1Copy full SHA for 6f1edd1

File tree

+37

-9

lines changed

+37

-9

lines changed

Lines changed: 13 additions & 9 deletions

Original file line number	Diff line number	Diff line change
`@@ -1,21 +1,25 @@`
	`1`	`+/**`
	`2`	`+ * @function Palindrome`
	`3`	`+ * @description Check whether the given string is Palindrome or not.`
	`4`	`+ * @param {String} str - The input string`
	`5`	`+ * @return {Boolean}.`
	`6`	`+ * @see [Palindrome](https://en.wikipedia.org/wiki/Palindrome)`
	`7`	`+ */`
`1`	`8`
`2`		`-// Check whether the given string is Palindrome or not`
`3`		`-export const Palindrome = (str) => {`
	`9`	`+const palindrome = (str) => {`
`4`	`10`	`if (typeof str !== 'string') {`
`5`		`- str=str.toString()`
	`11`	`+ thrownewTypeError('Invalid Input')`
`6`	`12`	`}`
`7`	`13`
`8`		`- if (str === null \|\| str === undefined) {`
`9`		`- return false`
`10`		`- }`
`11`		`-`
`12`		`- if (str.length === 1 \|\| str.length === 0) {`
	`14`	`+ if (str.length <= 1) {`
`13`	`15`	`return true`
`14`	`16`	`}`
`15`	`17`
`16`	`18`	`if (str[0] !== str[str.length - 1]) {`
`17`	`19`	`return false`
`18`	`20`	`} else {`
`19`		`- return Palindrome(str.slice(1, str.length - 1))`
	`21`	`+ return palindrome(str.slice(1, str.length - 1))`
`20`	`22`	`}`
`21`	`23`	`}`
	`24`	`+`
	`25`	`+export { palindrome }`

Lines changed: 24 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,24 @@`
	`1`	`+import { palindrome } from '../Palindrome'`
	`2`	`+`
	`3`	`+describe('Palindrome', () => {`
	`4`	`+ it('expects to return true for palindrome string', () => {`
	`5`	`+ const isPalindrome = palindrome('madam')`
	`6`	`+ expect(isPalindrome).toBe(true)`
	`7`	`+ })`
	`8`	`+`
	`9`	`+ it('expects to return true for Empty String', () => {`
	`10`	`+ const isPalindrome = palindrome('')`
	`11`	`+ expect(isPalindrome).toBe(true)`
	`12`	`+ })`
	`13`	`+`
	`14`	`+ it('expects to return false for non-palindrome string', () => {`
	`15`	`+ const isPalindrome = palindrome('foobar')`
	`16`	`+ expect(isPalindrome).toBe(false)`
	`17`	`+ })`
	`18`	`+`
	`19`	`+ it('Throw Error for Invalid Input', () => {`
	`20`	`+ expect(() => palindrome(123)).toThrow('Invalid Input')`
	`21`	`+ expect(() => palindrome(null)).toThrow('Invalid Input')`
	`22`	`+ expect(() => palindrome(undefined)).toThrow('Invalid Input')`
	`23`	`+ })`
	`24`	`+})`

Comments

(0)