Evaluate the following Postfix expression :20,10,-15,3,/, +, 5, * – InterviewSolution

1.

Evaluate the following Postfix expression :20,10,-15,3,/, +, 5, *

Answer»

Symbol	Operation	Stack	Result
20	Push	20
10	Push	20,10
-	pop(10) pop(20) Push(20-10)	10
15	Push	10,15
3	Push	10,15,3
/	Pop(3) Pop(15) Push(15/3) = 5	10.5
+	Pop(3) Pop(10) Push(10+5) = 15	15
5	Push	15,5
*	Pop(5) Pop(15) Push(15*5) = 5	75	75

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