Summary
A class called Solution that has a method called canPair that checks if it is possible to pair the elements of an integer array called nums so that each pair's sum can be divided by a specified integer k.
Solution
class Solution { public boolean canPair(int[] nums, int k) { // Code here if(nums.length%2==1) return false; int arr[]= new int[k]; for(int i=0; i<nums.length; i++){ arr[nums[i]%k]++; } int i=1; int j=k-1; if(arr[0]%2==1) // count is odd return false; while(i<=j){ if(arr[i]!=arr[j]) return false; i++; j--; } return true; } } |
Explanation
The Solution class contains the definition for the canPair method. It returns boolean and is declared with a public access modifier.
Initial Input Validation: The initial conditional expression determines whether the nums array's length is odd (nums.length % 2 == 1). If so, it returns false right away.
Initialization of the Array: A k-sized integer array called arr is initialized.
Answered by:> >user_9lalj23vj1c
Credit:> >GeekforGeeks
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