Lesson: 11 | Case Transformation of Mixed Casing in a String

Apex Codes

String name = 'eNgin bAsturk';
List<String> charSet= name.split('');

List<String> newList = new List<String>();
for (String ch : charSet) {
    if (ch.isAllUpperCase()) {
        newList.add(ch.toLowerCase());
    }
    else if (!ch.isAllUpperCase()) {
        newList.add(ch.toUpperCase());
    }
    else {
        newList.add(ch);
    }
}

String formattedName = String.join(newList, '');
System.debug(formattedName);

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