Created
December 7, 2021 14:05
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Modified Stack: Write a program to implement a special type of stack, which apart from supporting normal stack operations: push(), isFull(), pop() and isEmpty(), supports additional operations: getMax(), getMin(), getMiddle().
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| def display(stack): | |
| print("\n".join(stack)) | |
| def push(stack,size): | |
| if isFull(stack,size): | |
| print("Stack is full") | |
| else: | |
| stack.append(input()) | |
| def pop(stack): | |
| if isEmpty(stack): | |
| print("error: stack empty") | |
| else: | |
| print(stack.pop()) | |
| def isFull(stack,size): | |
| if len(stack)>size: | |
| return True | |
| else: | |
| return False | |
| def isEmpty(stack): | |
| if len(stack) == 0: | |
| return True | |
| else: | |
| return False | |
| def getMax(stack): | |
| if isEmpty(stack): | |
| print("error: stack empty") | |
| else: | |
| return max(stack) | |
| def getMin(stack): | |
| if isEmpty(stack): | |
| print("error: stack empty") | |
| else: | |
| return min(stack) | |
| def getMiddle(stack): | |
| if isEmpty(stack): | |
| print("error: stack empty") | |
| else: | |
| return stack[len(stack)//2] | |
| size=int(input("Initilialize size of stack: ")) | |
| size=size-1 | |
| stack=[] | |
| flag=True | |
| while flag: | |
| print("\n1.Push\n2.Pop\n3.Display\n4.Get Max\n5.Get Min\n6.Get Middle\n7.isFull\n8.isEmpty\n9.Exit") | |
| choice=int(input("Enter your choice: ")) | |
| if choice==1: | |
| push(stack,size) | |
| elif choice==2: | |
| pop(stack) | |
| elif choice==3: | |
| display(stack) | |
| elif choice==4: | |
| print(getMax(stack)) | |
| elif choice==5: | |
| print(getMin(stack)) | |
| elif choice==6: | |
| print(getMiddle(stack)) | |
| elif choice==7: | |
| print(isFull(stack,size)) | |
| elif choice==8: | |
| print(isEmpty(stack)) | |
| elif choice==9: | |
| flag=False | |
| else: | |
| print("Invalid choice") |
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