Search in a Rotated Sorted Array

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Fri Jan 03 2025 20:18:56 GMT+0000 (Coordinated Universal Time)

Saved by @khadizasultana #loop #c++ #vector #pointers #binarysearch #array

// Author : Khadiza Sultana
// Date : 1/4/2025
#include <iostream>
#include <vector>
using namespace std;

int search(vector<int>& nums, int target) {
    int st = 0, end = nums.size() - 1;
    while (st <= end) {
        int mid = st + (end - st) / 2;
        if (nums[mid] == target) {
            return mid;
        }
        if (nums[st] <= nums[mid]) { // Left half is sorted
            if (nums[st] <= target && target <= nums[mid]) {
                end = mid - 1;
            } else {
                st = mid + 1;
            }
        } else { // Right half is sorted
            if (nums[mid] <= target && target <= nums[end]) {
                st = mid + 1;
            } else {
                end = mid - 1;
            }
        }
    }
    return -1;
}

int main() {
    vector<int> nums = {4, 5, 6, 7, 0, 1, 2};
    int target = 0;

    int result = search(nums, target);

    if (result != -1) {
        cout << "Target " << target << " found at index: " << result << endl;
    } else {
        cout << "Target " << target << " not found in the array." << endl;
    }

    return 0;
}

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#javascript #convertir #array #.split() #.join() #.reverse()

Voltear palabras

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