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import java.util.Scanner; /** * UVA11332 */ public class UVA11332 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); String temp = ""; while (sc.hasNext()) { temp = sc.nextLine(); if (temp.equals("0")) break; String s = g(temp); System.out.println(s); } } public static String g(String str) { if (str.length() <= 1) return str; else { int sum = 0; for (int i = 0; i < str.length(); i++) sum += Integer.parseInt(str.substring(i, i + 1)); return g(Integer.toString(sum)); } } } |