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What does the following code snippet do?
#include <iostream>
using namespace std;
int binarySearch(int arr[], int n, int key) {
    int low = 0, high = n - 1;
    while (low <= high) {
        int mid = low + (high - low) / 2;
        if (arr[mid] == key)
            return mid;
        if (arr[mid] > key)
            high = mid - 1;
        else
            low = mid + 1;
    }
    return -1;
}
int main() {
    int arr[] = {2, 4, 6, 8, 10};
    int key = 6;
    int result = binarySearch(arr, 5, key);
    cout << result;
    return 0;
}
  • a)
    Implements binary search iteratively on a sorted array and returns the index of the key element if found, -1 otherwise.
  • b)
    Implements linear search iteratively on an unsorted array and returns the index of the key element if found, -1 otherwise.
  • c)
    Implements binary search recursively on a sorted array and returns the index of the key element if found, -1 otherwise.
  • d)
    Implements linear search recursively on an unsorted array and returns the index of the key element if found, -1 otherwise.
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
What does the following code snippet do?#include <iostream>using...
Explanation:

Binary Search Function:
- The code snippet contains a function called binarySearch that implements binary search iteratively on a sorted array.
- It takes three parameters: the array to be searched, the size of the array, and the key element to be searched.
- It initializes the low and high indices of the array and enters a while loop to search for the key element.
- It calculates the middle index using the formula (low + high) / 2 and compares the key element with the element at the middle index.
- If the key element is found at the middle index, it returns the index.
- If the key element is less than the element at the middle index, it updates the high index to search in the left half of the array.
- If the key element is greater than the element at the middle index, it updates the low index to search in the right half of the array.
- It continues this process until the key element is found or the low index surpasses the high index.

Main Function:
- In the main function, an array {2, 4, 6, 8, 10} is defined and a key element 6 is set.
- The binarySearch function is called with the array, size of the array (5), and the key element as parameters.
- The result of the binary search is stored in the result variable.
- Finally, the result is printed to the console.
Therefore, the code snippet implements binary search iteratively on a sorted array and returns the index of the key element if found, -1 otherwise.
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Community Answer
What does the following code snippet do?#include <iostream>using...
The code implements binary search iteratively on a sorted array and returns the index of the key element if found. If the key element is not found, it returns -1.
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What does the following code snippet do?#include <iostream>using namespace std;int binarySearch(int arr[], int n, int key) { int low = 0, high = n - 1; while (low <= high) { int mid = low + (high - low) / 2; if (arr[mid] == key) return mid; if (arr[mid] > key) high = mid - 1; else low = mid + 1; } return -1;}int main() { int arr[] = {2, 4, 6, 8, 10}; int key = 6; int result = binarySearch(arr, 5, key); cout << result; return 0;}a)Implements binary search iteratively on a sorted array and returns the index of the key element if found, -1 otherwise.b)Implements linear search iteratively on an unsorted array and returns the index of the key element if found, -1 otherwise.c)Implements binary search recursively on a sorted array and returns the index of the key element if found, -1 otherwise.d)Implements linear search recursively on an unsorted array and returns the index of the key element if found, -1 otherwise.Correct answer is option 'A'. Can you explain this answer?
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What does the following code snippet do?#include <iostream>using namespace std;int binarySearch(int arr[], int n, int key) { int low = 0, high = n - 1; while (low <= high) { int mid = low + (high - low) / 2; if (arr[mid] == key) return mid; if (arr[mid] > key) high = mid - 1; else low = mid + 1; } return -1;}int main() { int arr[] = {2, 4, 6, 8, 10}; int key = 6; int result = binarySearch(arr, 5, key); cout << result; return 0;}a)Implements binary search iteratively on a sorted array and returns the index of the key element if found, -1 otherwise.b)Implements linear search iteratively on an unsorted array and returns the index of the key element if found, -1 otherwise.c)Implements binary search recursively on a sorted array and returns the index of the key element if found, -1 otherwise.d)Implements linear search recursively on an unsorted array and returns the index of the key element if found, -1 otherwise.Correct answer is option 'A'. Can you explain this answer? for EmSAT Achieve 2024 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about What does the following code snippet do?#include <iostream>using namespace std;int binarySearch(int arr[], int n, int key) { int low = 0, high = n - 1; while (low <= high) { int mid = low + (high - low) / 2; if (arr[mid] == key) return mid; if (arr[mid] > key) high = mid - 1; else low = mid + 1; } return -1;}int main() { int arr[] = {2, 4, 6, 8, 10}; int key = 6; int result = binarySearch(arr, 5, key); cout << result; return 0;}a)Implements binary search iteratively on a sorted array and returns the index of the key element if found, -1 otherwise.b)Implements linear search iteratively on an unsorted array and returns the index of the key element if found, -1 otherwise.c)Implements binary search recursively on a sorted array and returns the index of the key element if found, -1 otherwise.d)Implements linear search recursively on an unsorted array and returns the index of the key element if found, -1 otherwise.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What does the following code snippet do?#include <iostream>using namespace std;int binarySearch(int arr[], int n, int key) { int low = 0, high = n - 1; while (low <= high) { int mid = low + (high - low) / 2; if (arr[mid] == key) return mid; if (arr[mid] > key) high = mid - 1; else low = mid + 1; } return -1;}int main() { int arr[] = {2, 4, 6, 8, 10}; int key = 6; int result = binarySearch(arr, 5, key); cout << result; return 0;}a)Implements binary search iteratively on a sorted array and returns the index of the key element if found, -1 otherwise.b)Implements linear search iteratively on an unsorted array and returns the index of the key element if found, -1 otherwise.c)Implements binary search recursively on a sorted array and returns the index of the key element if found, -1 otherwise.d)Implements linear search recursively on an unsorted array and returns the index of the key element if found, -1 otherwise.Correct answer is option 'A'. Can you explain this answer?.
Solutions for What does the following code snippet do?#include <iostream>using namespace std;int binarySearch(int arr[], int n, int key) { int low = 0, high = n - 1; while (low <= high) { int mid = low + (high - low) / 2; if (arr[mid] == key) return mid; if (arr[mid] > key) high = mid - 1; else low = mid + 1; } return -1;}int main() { int arr[] = {2, 4, 6, 8, 10}; int key = 6; int result = binarySearch(arr, 5, key); cout << result; return 0;}a)Implements binary search iteratively on a sorted array and returns the index of the key element if found, -1 otherwise.b)Implements linear search iteratively on an unsorted array and returns the index of the key element if found, -1 otherwise.c)Implements binary search recursively on a sorted array and returns the index of the key element if found, -1 otherwise.d)Implements linear search recursively on an unsorted array and returns the index of the key element if found, -1 otherwise.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for EmSAT Achieve. Download more important topics, notes, lectures and mock test series for EmSAT Achieve Exam by signing up for free.
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Besides giving the explanation of What does the following code snippet do?#include <iostream>using namespace std;int binarySearch(int arr[], int n, int key) { int low = 0, high = n - 1; while (low <= high) { int mid = low + (high - low) / 2; if (arr[mid] == key) return mid; if (arr[mid] > key) high = mid - 1; else low = mid + 1; } return -1;}int main() { int arr[] = {2, 4, 6, 8, 10}; int key = 6; int result = binarySearch(arr, 5, key); cout << result; return 0;}a)Implements binary search iteratively on a sorted array and returns the index of the key element if found, -1 otherwise.b)Implements linear search iteratively on an unsorted array and returns the index of the key element if found, -1 otherwise.c)Implements binary search recursively on a sorted array and returns the index of the key element if found, -1 otherwise.d)Implements linear search recursively on an unsorted array and returns the index of the key element if found, -1 otherwise.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for What does the following code snippet do?#include <iostream>using namespace std;int binarySearch(int arr[], int n, int key) { int low = 0, high = n - 1; while (low <= high) { int mid = low + (high - low) / 2; if (arr[mid] == key) return mid; if (arr[mid] > key) high = mid - 1; else low = mid + 1; } return -1;}int main() { int arr[] = {2, 4, 6, 8, 10}; int key = 6; int result = binarySearch(arr, 5, key); cout << result; return 0;}a)Implements binary search iteratively on a sorted array and returns the index of the key element if found, -1 otherwise.b)Implements linear search iteratively on an unsorted array and returns the index of the key element if found, -1 otherwise.c)Implements binary search recursively on a sorted array and returns the index of the key element if found, -1 otherwise.d)Implements linear search recursively on an unsorted array and returns the index of the key element if found, -1 otherwise.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of What does the following code snippet do?#include <iostream>using namespace std;int binarySearch(int arr[], int n, int key) { int low = 0, high = n - 1; while (low <= high) { int mid = low + (high - low) / 2; if (arr[mid] == key) return mid; if (arr[mid] > key) high = mid - 1; else low = mid + 1; } return -1;}int main() { int arr[] = {2, 4, 6, 8, 10}; int key = 6; int result = binarySearch(arr, 5, key); cout << result; return 0;}a)Implements binary search iteratively on a sorted array and returns the index of the key element if found, -1 otherwise.b)Implements linear search iteratively on an unsorted array and returns the index of the key element if found, -1 otherwise.c)Implements binary search recursively on a sorted array and returns the index of the key element if found, -1 otherwise.d)Implements linear search recursively on an unsorted array and returns the index of the key element if found, -1 otherwise.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice What does the following code snippet do?#include <iostream>using namespace std;int binarySearch(int arr[], int n, int key) { int low = 0, high = n - 1; while (low <= high) { int mid = low + (high - low) / 2; if (arr[mid] == key) return mid; if (arr[mid] > key) high = mid - 1; else low = mid + 1; } return -1;}int main() { int arr[] = {2, 4, 6, 8, 10}; int key = 6; int result = binarySearch(arr, 5, key); cout << result; return 0;}a)Implements binary search iteratively on a sorted array and returns the index of the key element if found, -1 otherwise.b)Implements linear search iteratively on an unsorted array and returns the index of the key element if found, -1 otherwise.c)Implements binary search recursively on a sorted array and returns the index of the key element if found, -1 otherwise.d)Implements linear search recursively on an unsorted array and returns the index of the key element if found, -1 otherwise.Correct answer is option 'A'. 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