How do you evaluate a postfix expression?
Table of Contents
- 1 How do you evaluate a postfix expression?
- 2 What is the value of the evaluation of postfix expression 6 3 2 4?
- 3 What is evaluation of expression?
- 4 Which of the following statements about stack is not correct?
- 5 What is the value of postfix?
- 6 What data structure is used to evaluate an expression in postfix form?
- 7 What is timetime complexity of postfix expressions?
How do you evaluate a postfix expression?
Following is an algorithm for evaluation postfix expressions.
- Create a stack to store operands (or values).
- Scan the given expression and do the following for every scanned element. …..a) If the element is a number, push it into the stack.
- When the expression is ended, the number in the stack is the final answer.
What is the result of evaluating the postfix expression 5 4 6?
The result of evaluating the postfix expression 5, 4, 6, +, *, 4, 9, 3, /, +, * is? = 350.
What is the value of the evaluation of postfix expression 6 3 2 4?
The best explanation: Postfix Expression is (6*(3-(2+4))) which results -18 as output.
What is the result of postfix expression?
From the postfix expression, when some operands are found, pushed them in the stack. When some operator is found, two items are popped from the stack and the operation is performed in correct sequence. After that, the result is also pushed in the stack for future use.
What is evaluation of expression?
To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations. Example 2.3. 1: evaluate.
What is the postfix form of the expression a B * C * D E * F G?
Discussion Forum
| Que. | The postfix form of the expression (A+ B)*(C*D- E)*F / G is? |
|---|---|
| b. | AB + CD* E – F **G / |
| c. | AB + CD* E – *F *G / |
| d. | AB + CDE * – * F *G / |
| Answer:AB+ CD*E – FG /** |
Which of the following statements about stack is not correct?
The option that is, “C. Stack is the FIFO data structure” is the incorrect statement about stack data. Stack data structure is basically a computer structure which serves as a collection of elements.
What is the value of the postfix expression 6 324 *?
What is software? Posted by: Adarsh K.
What is the value of postfix?
Discussion Forum
| Que. | What is the value of the postfix expression 6 3 2 4 + – *: |
|---|---|
| b. | Something between 5 and -5 |
| c. | Something between 5 and 15 |
| d. | Something between 15 and 100 |
| Answer:Something between 15 and 100 |
What is the value of postfix expression ABCD +-*?
Discussion Forum
| Que. | What is the value of the postfix expression? abc d + – * (where a = 8 , b = 4 , c = 2 and d = 5) |
|---|---|
| b. | -8/3 |
| c. | 24 |
| d. | -24 |
| Answer:-24 |
What data structure is used to evaluate an expression in postfix form?
A postfix expression can be evaluated using the Stack data structure.
Algorithm for Evaluation of Postfix Expression 1 If the element is an operand, push it into the stack. 2 If the element is an operator O, pop twice and get A and B respectively. Calculate BOA and push it back to the stack. 3 When the expression is ended, the value in the stack is the final answer. More
Why stack is used for infix to Postfix conversion?
As discussed in Infix To Postfix Conversion Using Stack, the compiler finds it convenient to evaluate an expression in its postfix form.
What is timetime complexity of postfix expressions?
Time Complexity: O (n) where n is the size of the given string/expression. Auxiliary Space: O (n) because we used the stack space for n characters. Initialize a string s containing postfix expression. Create a stack of the same size as that of the string. If there is no stack return -1.
What is an example of a postfix operator in C?
In postfix or reverse polish notation, every operator follows all of its operands. For example:5 3 2 * + Also Read: Infix to Postfix Conversion in C [Program and Algorithm] Algorithm for Evaluation of Postfix Expression