Q. The initial configuration of a queue is a, b, c, d, ('a' is in the front end). To get the configuration d, c, b, a, one needs a minimum of

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Q. Queue can be used to implement

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Q. The postfix form of the expression (A+B)∗(C∗D-E)∗F/G is

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Q. What is the postfix form of the following prefix expression -A/B*C$DE

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Q. Which of the following types of expressions does not require precedence rule when evaluated?

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Q. If memory for the run-time stack is only 150 cells(words), how big can N be in Factorial(N) before encounterring stack overflow?

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Q. Using Pop(S1, Item) Push(S1,Item) Read(Item) Print(Item) the variables S1 represents (stack) and Item are given the input file: A,B,C,D,E,F Which stacks are possible:

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Q. Using Pop (S1,Item) ,Push(S1, Item), Getlist(Item), Pop(S2,Item), and the variables S1,S2(stacks with Top1 and Top2) and Item and given the input file: A,B,C,D,E,F Which stack are possible?

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Q. Following sequence of operations is performed on a stack push(1),push(2),pop, push(1),push(2)pop,pop,pop,push(2),pop.The sequence of poped out values are

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Q. In eveluating the arithmetic expression 2*3-(4+5),using stacks to evaluate its equivalent postfix form, which of the following stack configuration is not possible?

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Q. Stack A has the entries a,b,c(with a on top). Stack B is empty.An entry popped out of stack A can be printed immediately or pushed to stack B.An entry popped out of the stack B can only be printed. In this arrangement, which of the following permutations of a,b,c are not possible?

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Q. Stack can't be used to

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Q. Which of the following permutations can be obtained in the output(in the same order),using a stack assuming that the input is the sequence 1,2,3,4,5 in that order?

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Q. Stack is useful for implementing

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Q. The postfix equivalent of the prefix * + a b - c d is

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Q. Stacks cannot be used to

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Q. The postifx expression for the infix expression A + B* (C+D) / F + D*E is

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Q. Stack is useful for implemeting

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Q. An item that is read as input can be either pushed to a stack and later popped and printed, or printed directly. Which of the following will be the output if the input is the sequence of items 1, 2, 3

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Q. Process of inserting an element in stack is called ____________

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