Assume a machine that has a single register and six instructions.

LD A Places the operand A into the register

ST A Places the contents of the register into the variable A

AD A Adds the contents of the variable A to the register

SB A Subtracts the contents of the variable A from the register

ML A Multiplies the contents of the register by the variable A

DV A Divides the contents of the register by the variable A

Write a program in Java utilizing stacks that accepts a postfix expression containing single-letter operands and the operators +, -, *, and / and prints a sequence of instructions to evaluate the expression and leave the result in the register. Use variables of the form TEMPn as temporary variables.

For example, using the postfix expression ABC * + DE - / should print the following:

LD B

ML C

ST TEMP1

LD A

AD TEMP1

ST TEMP2

LD D

SB E

ST TEMP3

LD TEMP2

DV TEMP3

ST TEMP4

Use of standard libraries is restricted to standard I/O calls and standard math functions, etc. In other words, you can't use the library stack code.