Submission #187168

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Source Code Expand

import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    /**
     * @param str snake_to_upper_camel
     * @return SnakeToUpperCamel
     */
    public static String snakeToUpperCamel(String str) {
        Pattern p = Pattern.compile("_([a-z])");
        Matcher m = p.matcher(str.toLowerCase());
        StringBuffer sb = new StringBuffer(str.length());
        while (m.find()) {
            m.appendReplacement(sb, m.group(1).toUpperCase());
        }
        m.appendTail(sb);
        sb.replace(0, 1, sb.substring(0, 1).toUpperCase());
        return sb.toString();
    }
    static void solve() throws Exception {
        Scanner sc = new Scanner(System.in);

        System.out.println(snakeToUpperCamel(sc.next()));
    }

    public static void main(String... args) throws Exception {

        solve();
    }
}

Submission Info

Judge Result