Leetcode 709. To Lower Case

[easy]

To Lower Case - LeetCode

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.

[Gary-Java]

1. use the ASCII table
2. use string builder to create result string
3. trick: need to use (char) to change back from Integer to Char