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package learn.ds.string;

/**

* Implement function ToLowerCase() that has a string parameter str, and returns the same string in lowercase.

* ASCII Table : https://www.cs.cmu.edu/~pattis/15-1XX/common/handouts/ascii.html

* https://leetcode.com/problems/to-lower-case

public class StringToLower {

public static String toLower(String str) {

if (str == null) {

return "";

}

StringBuilder sb = new StringBuilder();

for (char c : str.toCharArray()) {

sb.append((c >= 65 && c <= 90) ? (char) (c + 32) : c);

}

return sb.toString();

}

public static void main(String[] args) {

System.out.println(toLower("Test tesT tESt"));

}

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