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## Data Structure Questions and Answers-Fibonacci Search

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Question 1 |

Which algorithmic technique does Fibonacci search use?

Brute force | |

Divide and Conquer | |

Greedy Technique | |

Backtracking |

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Question 1 Explanation:

With every iteration, we divide the given array into two sub arrays(not necessarily equal).

Question 2 |

Choose the recursive formula for the Fibonacci series.(n>=1)

F(n) = F(n+1) + F(n+2) | |

F(n) = F(n) + F(n+1) | |

F(n) = F(n-1) + F(n-2) | |

F(n) = F(n-1) - F(n-2) |

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Question 2 Explanation:

None.

Question 3 |

Write a function for the Fibonacci search method.

public static int fibSearch(final int key, final int[] a) { int low = 0; int high = a.length - 1; int fibCurrent = | |

None of the mentioned |

**NTA NET Questions answers**

Question 3 Explanation:

Here instead of choosing middle of the array as a point of array division, we use Fibonacci numbers, the division index are strictly between two Fibonacci numbers.

Question 4 |

What is the time complexity of Fibonacci Search?

O(logn) | |

O(n) | |

O(n ^{2}) | |

O(nlogn) |

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Question 4 Explanation:

Since it divides the array into two parts, although not equal, its time complexity is O(logn), it is better than binary search in case of large arrays.

Question 5 |

What are the advantages of Fibonacci Search?

When the element being searched for has a non uniform access storage | |

Can be used in magnetic tapes | |

Can be used for large arrays which do not fit in the CPUcache or in the RAM | |

All of the mentioned |

**UPSC test Questions answers**

Question 5 Explanation:

When the speed of access depends on the location previously accessed, Fibonacci search is better compared to binary search as it performs well on those locations which have lower dispersion.

There are 5 questions to complete.