Input String but got a number?-CodePudding

I tried to use recursion to reverse a string but I got an output of numbers

public static String reverse(String str) {
            if(str == null) {
            return null;
            } 
            if(str.length() > 1) {
                int ch = str.charAt(0);
                String withoutFirst = str.substring(1);
                String reverseNoFirst = reverse(withoutFirst);
                String result = reverseNoFirst   ch;
                return result;
            }
            return str;
        }

CodePudding user response：

You need to declare ch as a char, not int:

char ch = str.charAt(0);

CodePudding user response：

Replace "int ch = str.charAt(0)" with "String chr=String.valueOf(str.charAt(0));"