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Added Infix to Postfix Conversion in Python #235
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Neilblaze
suggested changes
Aug 31, 2020
| @@ -0,0 +1,12 @@ | |||
| #In Infix expression operator is in between every pair of operands. | |||
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Update the README to this ⬇
### Infix to Postfix
> • In Infix expression operator is in between every pair of operands.<br>
> • In Postfix expression, the operator is followed for every pair of operands.
- Infix expression is converted to postfix conversion using Stack.
- Postfix expression is evaluated using Stack in Left to Right order.
##### If the scanned character is operand, show it as output. Else, If precedence of scanned operator is greater than the precedence of the operator in the stack,push it.
> Else, Pop all the operators from the stack which are greater than or equal to in precedence than that of the scanned operator.
• If the scanned input is '(', push it into stack<br>
• If the scanned input is ')' ,pop the stack and the output it until '(' comes.<br>
• Repeat above steps. Continue Pop and output from stack until it becomes empty.
##### It makes the code more efficient and even reduces the time complexity.
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Just replace the above text with the present one.
| # Displaying the Output | ||
| print("Postfix expression: ", infix_to_postfix(infix_expression)) | ||
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| """ |
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Add this part in README under Constraints
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Updated changes. Kindly review.
Neilblaze
approved these changes
Aug 31, 2020
Nice @nutanaarohi123 |
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Infix expression is converted to postfix conversion using Stack and evaluated in Left to Right order.
It makes the code more efficient and even reduces the time complexity.
Have Read the contributing guidelines ?
YES
Issue No.
#91 (Issue no. 1 )