Select the correct statements among the following In the presence of duplicate elements in a list, binary search always finds the first occurrence of the element in the list In the presence of duplicate elements in a list, binary search may or may not find the first occurrence of the element in the list In the presence of duplicate elements in a list, the existing binary search algorithm with minor modifications can be used to find the first occurrence of the target element in the list In the presence of duplicate elements in a list , the existing binary search can be used to find any kth(k can be any number from 1 to number of times the element has been repeated) of target element in the list
Question
Select the correct statements among the following In the presence of duplicate elements in a list, binary search always finds the first occurrence of the element in the list In the presence of duplicate elements in a list, binary search may or may not find the first occurrence of the element in the list In the presence of duplicate elements in a list, the existing binary search algorithm with minor modifications can be used to find the first occurrence of the target element in the list In the presence of duplicate elements in a list , the existing binary search can be used to find any kth(k can be any number from 1 to number of times the element has been repeated) of target element in the list
Solution
The correct statements among the following are:
- In the presence of duplicate elements in a list, binary search may or may not find the first occurrence of the element in the list.
- In the presence of duplicate elements in a list, the existing binary search algorithm with minor modifications can be used to find the first occurrence of the target element in the list.
The first statement is correct because the binary search algorithm does not guarantee finding the first occurrence of an element in a list if there are duplicates. It will return as soon as it finds a match, which may not be the first occurrence.
The third statement is also correct. With minor modifications, the binary search algorithm can be adapted to find the first occurrence of an element in a list, even if there are duplicates. This typically involves adding a check to see if the found element is the first occurrence or not.
The second and fourth statements are incorrect. The binary search algorithm, without modifications, does not guarantee finding the first occurrence of an element in a list with duplicates. And it cannot be used to find any kth occurrence of an element in a list, as it is designed to find an element, not its specific occurrence.
Similar Questions
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Write a program for binary search. The input will be the sorted file obtained as output of insertion sort or selection sort.The number to be searched should be given from the keyboard.The output will be the index of the location where the number is found. If the file contains unique numbers then a single index will be returned. If the file contains non-unique or duplicate numbers then the index of the first number in the list has to be returned.
Problem StatementArun is given an array of integers where all elements appear twice, except for one element that appears only once. The goal is to find this single, non-duplicate element using a linear search algorithm. If the element is not found, print the appropriate message.Assist Arun in solving this challenge.Input format :The first line of input consists of an integer N, representing the number of elements in the array.The second line consists of N space-separated integers, representing the array elements.Output format :The output prints an integer, representing the single non-duplicate element in the given array.If no such element is found, print "No non-duplicate element found".Refer to the sample output for formatting specifications.Code constraints :1 ≤ N ≤ 151 ≤ elements of the array ≤ 30Sample test cases :Input 1 :91 1 2 3 3 4 4 8 8Output 1 :2Input 2 :712 16 12 15 17 16 15Output 2 :17Input 3 :414 26 14 26Output 3 :No non-duplicate element found
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