CareerCup

Hi,
Can you please post the complete question? Also, if possible the code.
Thank you
Sam

do the for loop for the corresponding number with the letters. Put all the combinations into the list and then print the combination list.

public static final String[] keypad = {"", "", "ABC", "DEF", "GHI", "JKL", "MNO", "PQRS", "TUV", "WXYZ"};

String[] ans = printAlphabet(410292);
for (String str : ans) {
	System.out.println(str);
}

static String[] printAlphabet(int num){
		if (num >= 0 && num < 10){
			String[] retStr;
			if (num == 0 || num ==1){
				retStr = new String[]{""};
			} else {
				retStr = new String[keypad[num].length()];
				for (int i = 0 ; i < keypad[num].length(); i++){
					retStr[i] = String.valueOf(keypad[num].charAt(i));
				}
			}
			return retStr;
		}
			
		String[] nxtStr = printAlphabet(num/10);
		
		int digit = num % 10;
		
		String[] curStr = null;
		if(digit == 0 || digit == 1){
			curStr = new String[]{""};
		} else {
			curStr = new String[keypad[digit].length()];
			for (int i = 0; i < keypad[digit].length(); i++){
				curStr[i] = String.valueOf(keypad[digit].charAt(i));
			}
		}
		
		String[] result = new String[curStr.length * nxtStr.length];
		int k=0;
		
		for (String cStr : curStr){
			for (String nStr : nxtStr){
				result[k++] = nStr + cStr;
			}
		}
		return result;
	}

public class Keypad {
public static final String[] keypad = {" ", " ", "ABC", "DEF", "GHI", "JKL", "MNO", "PQRS", "TUV", "WXYZ"};


static StringBuffer s=new StringBuffer();
public void printAlphabets(int number){
int digit = number%10;
int i;
if(number == 0)
{
System.out.print(s.toString()+", ");
return;
}
String currentString = keypad[digit];
for(i = 0;i<currentString.length();i++){
s.append(currentString.charAt(i));
printAlphabets(number/10);
s.delete(s.length()-1,s.length());
}
}

public static void main(String argv[]) {
Keypad key = new Keypad();
key.printAlphabets(410292);
}
}