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Divisible Sum Pairs(HackerRank)
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Divisible Sum Pairs(HackerRank)
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import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;
public class Solution {
// Complete the divisibleSumPairs function below.
static int divisibleSumPairs(int n, int k, int[] ar)
{
int sum,result=0;
for(int i=0;i<n-1;i++)
{
for(int j=i+1;j<n;j++)
{
sum=0;
sum = ar[i] + ar[j];
if(sum % k == 0)
{
result++;
}
}
}
return result;
}
private static final Scanner scanner = new Scanner(System.in);
public static void main(String[] args) throws IOException {
BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));
String[] nk = scanner.nextLine().split(" ");
int n = Integer.parseInt(nk[0]);
int k = Integer.parseInt(nk[1]);
int[] ar = new int[n];
String[] arItems = scanner.nextLine().split(" ");
scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
for (int i = 0; i < n; i++) {
int arItem = Integer.parseInt(arItems[i]);
ar[i] = arItem;
}
int result = divisibleSumPairs(n, k, ar);
bufferedWriter.write(String.valueOf(result));
bufferedWriter.newLine();
bufferedWriter.close();
scanner.close();
}
}