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## Data Structure Questions and Answers-Reverse a Word using Stack

Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |

Reversing a word using stack can be used to find if the given word is a palindrome or not.

True | |

False |

Question 1 Explanation:

This application of stack can also be used to find if the given word is a palindrome because, if the reversed is same as that of the original word, the given word is a palindrome.

Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |

Which is the most appropriate data structure for reversing a word?

queue | |

stack | |

tree | |

graph |

Question 2 Explanation:

Stack is the most appropriate data structure for reversing a word because stack follows LIFO principle.

Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |

Operations required for reversing a word or a string using stack are push() and pop().

True | |

False |

Question 3 Explanation:

Push operation inserts a character into the stack and pop operation pops the top of the stack.

Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |

What is the time complexity of reversing a word using stack algorithm?

O (N log N) | |

O (N ^{2}) | |

O (N) | |

O (M log N) |

Question 4 Explanation:

The time complexity of reversing a stack is mathematically found to be O (N) where N is the input.

Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER] |

What will be the word obtained if the word "abbcabb" is reversed using a stack?

bbabbca | |

abbcabb | |

bbacbba | |

bbacabb |

Question 5 Explanation:

The string "abbcabb" is pushed on to the stack. If the characters are popped one by one, the word obtained will be bbacbba.

There are 5 questions to complete.