tasks a-s

Task/SEDOLs/Java/sedols.java

@@ -0,0 +1,31 @@
+import java.util.Scanner;
+
+public class SEDOL{
+	public static void main(String[] args){
+		Scanner sc = new Scanner(System.in);
+		while(sc.hasNext()){
+			String sedol = sc.next();
+			System.out.println(sedol + getSedolCheckDigit(sedol));
+		}
+	}
+	
+	private static final int[] mult = {1, 3, 1, 7, 3, 9};
+	
+	public static int getSedolCheckDigit(String str){
+	    if(!validateSedol(str)){
+	    	System.err.println("SEDOL strings must contain six characters with no vowels.");
+	    	return -1;
+	    }
+	    str = str.toUpperCase();
+	    int total = 0;
+	    for(int i = 0;i < 6; i++){
+	        char s = str.charAt(i);
+	        total += Character.digit(s, 36) * mult[i];
+	    }
+	    return (10 - (total % 10)) % 10;
+	}
+
+	public static boolean validateSedol(String str){
+		return (str.length() == 6) && !str.toUpperCase().matches(".*?[AEIOU].*?");
+	}
+}