Package g2101_2200.s2183_count_array_pairs_divisible_by_k

Class Solution

java.lang.Object

g2101_2200.s2183_count_array_pairs_divisible_by_k.Solution

public class Solution
extends Object

2183 - Count Array Pairs Divisible by K\. Hard Given a **0-indexed** integer array `nums` of length `n` and an integer `k`, return _the **number of pairs**_ `(i, j)` _such that:_ * `0 <= i < j <= n - 1` _and_ * `nums[i] * nums[j]` _is divisible by_ `k`. **Example 1:** **Input:** nums = [1,2,3,4,5], k = 2 **Output:** 7 **Explanation:** The 7 pairs of indices whose corresponding products are divisible by 2 are (0, 1), (0, 3), (1, 2), (1, 3), (1, 4), (2, 3), and (3, 4). Their products are 2, 4, 6, 8, 10, 12, and 20 respectively. Other pairs such as (0, 2) and (2, 4) have products 3 and 15 respectively, which are not divisible by 2. **Example 2:** **Input:** nums = [1,2,3,4], k = 5 **Output:** 0 **Explanation:** There does not exist any pair of indices whose corresponding product is divisible by 5. **Constraints:** * 1 <= nums.length <= 105 * 1 <= nums[i], k <= 105

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
long	countPairs(int[] nums, int k)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

countPairs

public long countPairs(int[] nums,
 int k)