Computer scienceProgramming languagesKotlinTypes and data structuresStrings

CharSequence

Theory

Searching letters

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Write a function called containsLetters that takes two CharSequence parameters: a source and a letters sequence. The function should return true if the source sequence contains all the characters in the letters sequence, and false otherwise.

Your function should be case-sensitive and only consider the individual characters in the letters sequence, not any subsequences of it.

Sample Input 1: 

example, amp

Sample Output 1: 

true

Sample Input 2: 

example, amx

Sample Output 2: 

false

Sample Input 3: 

Hello world!, owod

Sample Output 3: 

true
Write a program in Kotlin
fun containsLetters(source: CharSequence, letters: CharSequence): Boolean {
// write your code here
}
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