JAVA PROGRAM

PART 1:

Prompt the user for a phone number. Output all the possible phone numbers that use the letters on the keyboard. For example, the phone number 123-4567 will have as one of its combinations 1CFILOQ. Use recursion, not loops.

Input:

123

Required Output

Enter a phone number (numbers only).

1AD

1AE

1AF

1BD

1BE

1BF

1CD

1CE

1CF

PART 2:

Allow the user to enter as many phone numbers as they wish (until exit is entered). Loops allowed in main method.

Input:

123

456

789

exit

Required Output

Enter a phone number (numbers only). Type "exit" to end.

1AD

1AE

1AF

1BD

1BE

1BF

1CD

1CE

1CF

9 option(s) are available

Enter a phone number (numbers only). Type "exit" to end.

GJM

GJN

GJO

GKM

GKN

GKO

GLM

GLN

GLO

HJM

HJN

HJO

HKM

HKN

HKO

HLM

HLN

HLO

IJM

IJN

IJO

IKM

IKN

IKO

ILM

ILN

ILO

27 option(s) are available

Enter a phone number (numbers only). Type "exit" to end.

PTW

PTX

PTY

PTZ

PUW

PUX

PUY

PUZ

PVW

PVX

PVY

PVZ

QTW

QTX

QTY

QTZ

QUW

QUX

QUY

QUZ

QVW

QVX

QVY

QVZ

RTW

RTX

RTY

RTZ

RUW

RUX

RUY

RUZ

RVW

RVX

RVY

RVZ

STW

STX

STY

STZ

SUW

SUX

SUY

SUZ

SVW

SVX

SVY

SVZ

48 option(s) are available

Enter a phone number (numbers only). Type "exit" to end.