Question

- Convert the following infix expressions to postfix.
- a * b + c – d
- a + b / (c + d)

Answer #1

Convert the given infix expression to a postfix expression: a +
b * c

#data structures
Give the infix form of the following postfix expression.
1 A B C + * D - E F + K - +
Give the postfix form of the following infix expression.
2 ( A + B ) * ( C - D + E )

Write a java class program to convert from
INFIX TO POSTFIX
Using stack operations

in Java
In this exercise, you'll write a Java version of the
infix-to-postfix conversion algorithm. These same mechanisms can be
used as a part of writing a simple compiler.
Write class InfixToPostfixConverter co convert
an ordinary infix arithmetic expression (assume a valid expression
is entered) with single-digit integers (to make
things easier) such as
(6 + 2) • 5 - 8 / 4
to a postfix expression. The postfix version (no parentheses are
needed) of this infix expression is
6...

Use C++
Your program should expect as input from (possibly re-directed)
stdin a series of space- separated strings. If you read a1 (no
space) this is the name of the variable a1 and not "a" followed by
"1". Similarly, if you read "bb 12", this is a variable "bb"
followed by the number "12" and not "b" ,"b", "12" or "bb", "1"
,"2". Your program should convert all Infix expressions to Postfix
expressions, including expressions that contain variable names. The...

For the postfix expressions, 32 5 3 + / 5 *, trace the algorithm
for evaluating postfix expressions by showing the contents of the
stack immediately before each of the tokens marked with a caret is
read. Also, give the value of the postfix expression.

The grammar below generates Boolean expressions in prefix
notation:
B → O B B | not B | id O → and | or
a) Write an attribute grammar to translate Boolean expressions
into fully parenthesized infix form. For example, expression and
and a or b c d turns into the following fully parenthesized
expression ((a and (b or c)) and d).
b) Now write an attribute grammar to translate the Boolean
expressions into parenthesized expressions in infix form without...

Evaluate the postfix expressions using stacks
12 14 + 12 / 12 14 *

Please give the postfix form of the arithmetic expression (a*b +
2*c)/(2 - 3*d) + c

Replace the natural joins in the following expressions by
equivalent theta-joins and projections:
a)(R(a,b) ⋈S(b,c)) ⋈S.c>T.cT(c,d)?

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