Battle Simulation

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/**
 *
 * @author ahuotala
 */
public class Battle {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        IO io = new IO();
        String input = io.next();
        StringBuilder output = new StringBuilder(input.length());
        for (int i = 0; i < input.length(); i++) {
            char c = input.charAt(i);
            if (i < input.length() - 2 && c != input.charAt(i+1) && c != input.charAt(i+2) && input.charAt(i+1) != input.charAt(i+2)) {
                output.append('C');
                i += 2;
            } else {
                switch (c) {
                    case 'R' :
                        output.append('S');
                        break;
                    case 'B' :
                        output.append('K');
                        break;
                    case 'L' :
                        output.append('H');
                        break;
                    default :
                        output.append("RIP");
                        break;
                }
            }
        }
        io.println(output.toString());
        io.close();
    }

}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED