LeetCode in Kotlin

709. To Lower Case

Easy

Given a string s, return the string after replacing every uppercase letter with the same lowercase letter.

Example 1:

Input: s = “Hello”

Output: “hello”

Example 2:

Input: s = “here”

Output: “here”

Example 3:

Input: s = “LOVELY”

Output: “lovely”

Constraints:

• 1 <= s.length <= 100
• s consists of printable ASCII characters.

Solution

class Solution {
    fun toLowerCase(s: String): String {
        val c = s.toCharArray()
        for (i in s.indices) {
            if (c[i] in 'A'..'Z') {
                c[i] = (c[i].code - 'A'.code + 'a'.code).toChar()
            }
        }
        return String(c)
    }
}

This site is open source. Improve this page.