BinarySearch

[Karthikeya914]

Summary by Sourcery

New Features:

• Implement a binary search algorithm in Java that reads input from the user, sorts the array, and performs search queries.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR implements a Binary Search algorithm in Java. The implementation includes a main method that reads input from the user, performs binary search on a sorted array, and outputs whether the searched element was found along with its position.

Class diagram for BinarySearch implementation

classDiagram
    class BinarySearch {
        +main(String[] args)
    }

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File-Level Changes

Change	Details	Files
Implementation of Binary Search algorithm with user input handling	Creates a Scanner object to handle user input for array size, number of queries, and array elements Implements array initialization and sorting before search operations Implements binary search logic using start, end, and mid pointers Handles multiple search queries in a loop Provides output indicating whether element was found and its position	Java/BinarySearch.java

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[sourcery-ai]

Hey @Karthikeya914 - I've reviewed your changes - here's some feedback:

Overall Comments:

• Consider extracting the binary search logic into a separate method that returns the found index (or -1 if not found). This would improve reusability and testability of the code.
• Use more descriptive variable names - 'q' could be 'numQueries', 'x' could be 'searchTarget', etc. This makes the code more readable and self-documenting.

Here's what I looked at during the review

• 🟡 General issues: 1 issue found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟡 Complexity: 1 issue found
• 🟢 Documentation: all looks good

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[sourcery-ai]

suggestion: Consider extracting binary search logic into a separate method

Moving the binary search logic into a dedicated method would improve code modularity and reusability, separating the algorithm from I/O operations.

private static int binarySearch(int[] arr, int x) {
    int start = 0;
    int end = arr.length - 1;
    while (start <= end) {
        int mid = start + (end - start) / 2;
        if (arr[mid] > x) end = mid - 1;
        else if (arr[mid] < x) start = mid + 1;
        else return mid;
    }
    return -1;
}

[sourcery-ai]

issue (complexity): Consider extracting the binary search logic into a separate method and grouping input handling together.

The code would be more maintainable with the binary search logic extracted into a separate method and input handling grouped together. This reduces nesting and improves readability while maintaining functionality. Here's a suggested refactoring:

public class BinarySearch {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] arr = readArray(sc);
        int q = sc.nextInt();

        while (q-- > 0) {
            int x = sc.nextInt();
            int result = binarySearch(arr, x);
            System.out.println(result >= 0 ? "found " + result : "not found");
        }
        sc.close();
    }

    private static int[] readArray(Scanner sc) {
        int size = sc.nextInt();
        int[] arr = new int[size];
        for (int i = 0; i < size; i++) {
            arr[i] = sc.nextInt();
        }
        Arrays.sort(arr);
        return arr;
    }

    private static int binarySearch(int[] arr, int x) {
        int start = 0, end = arr.length - 1;
        while (start <= end) {
            int mid = start + (end - start) / 2;
            if (arr[mid] == x) return mid;
            if (arr[mid] > x) end = mid - 1;
            else start = mid + 1;
        }
        return -1;
    }
}

This refactoring:

1. Extracts binary search into a reusable method
2. Separates input array handling
3. Simplifies the main loop by using the search result directly
4. Reduces nesting depth and removes the need for the isfound flag

[x0lg0n]

Resolve the conflicts first then I will approve this PR.

[Karthikeya914]

Resolve the conflicts first then I will approve this PR.

is it ok now sir ?