Question

Letter to Number Converter:

Create a program that reads a phone number as letters from a variable and converts it to numbers
e.g. GET-LOAN = 438-5626
When the company uses more than 7 letters, it should convert it to 7 digits
e.g. CALL-HOME = 225-5466
The resulting converted number should include the dash to separate the three digits from the four digits

Hint: Use the String object charAt method to read the variable that is storing the phone number as letters.

Answer 1

SOURCE CODE:

import java.util.Scanner;
public class letters
{
static int num(char a)
{
switch(a)
{
case 'a':
case 'b':
case 'c':
case 'A':
case 'B':
case 'C':
return 2;
case 'D':
case 'E':
case 'F':
case 'd':
case 'e':
case 'f':
return 3;
case 'g':
case 'h':
case 'i':
case 'G':
case 'H':
case 'I':
return 4;
case 'j':
case 'k':
case 'l':
case 'J':
case 'K':
case 'L':
return 5;
case 'm':
case 'n':
case 'o':
case 'M':
case 'N':
case 'O':
return 6;
case 'p':
case 'q':
case 'r':
case 's':
case 'P':
case 'Q':
case 'R':
case 'S':   
return 7;
case 't':
case 'u':
case 'v':
case 'T':
case 'U':
case 'V':
return 8;
case 'w':
case 'x':
case 'y':
case 'z':
case 'W':
case 'X':
case 'Y':
case 'Z':   
return 9;
}
return 0;
}
public static void main(String args[])
{
String a;
int b[]=new int[8];
int i,j=0;
Scanner sc=new Scanner(System.in);
System.out.println("Enter letters");
a=sc.next();
for(i=0;i<8;i++)
{
if(a.charAt(i)=='-')
;
else
{
b[j]=num(a.charAt(i));
j++;
}
/*b[i]=0;
else
b[i]=num(a.charAt(i));*/
}
j=0;
System.out.println("The number is : ");
for(i=0;i<8;i++)
{
if(i==3)
System.out.print("-");
else
{
System.out.print(b[j]);
j++;
}
}
}
}

SCREENSHOTS:

letters Class Edit Tools Options letters X Compile Undo Cut Copy Paste Find.. Close Source Code import java.util.Scanner; public class letters static int num(char a) switch(a) case 'a case 'b' case 'c': case A' case 'B': Class compiled - no syntax errors saved

Enter letters CALL-HOME The number is: 225-5466Enter letters GET-LOAN The number is: 438-5626