LeetCode 1385: Find the Distance Value Between Two Arrays Solution

Master LeetCode problem 1385 (Find the Distance Value Between Two Arrays), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.

1385. Find the Distance Value Between Two Arrays

Easy

Array Two Pointers Binary Search Sorting

Problem Explanation

Explanation

To solve this problem, we iterate through each element in arr1 and for each element, we check if there exists an element in arr2 such that the absolute difference between the two elements is less than or equal to d. If such an element exists, we increment a counter. Finally, we return the count as the distance value between the two arrays.

Algorithm:
1. Initialize a counter variable to 0.
2. Iterate through each element num1 in arr1.
3. For each num1, iterate through each element num2 in arr2.
4. Check if the absolute difference between num1 and num2 is less than or equal to d.
5. If there is no such element in arr2, increment the counter by 1.
6. Return the counter as the distance value.
Time Complexity: O(n*m) where n is the length of arr1 and m is the length of arr2.
Space Complexity: O(1) as we are using only a constant amount of extra space.

Solution Code

class Solution {
    public int findTheDistanceValue(int[] arr1, int[] arr2, int d) {
        int count = 0;
        for (int num1 : arr1) {
            boolean found = false;
            for (int num2 : arr2) {
                if (Math.abs(num1 - num2) <= d) {
                    found = true;
                    break;
                }
            }
            if (!found) {
                count++;
            }
        }
        return count;
    }
}

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