Hackerrank Diagonal Difference problemi ve çözümü..
import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;
class Result {
/*
* Complete the ‘diagonalDifference’ function below.
*
* The function is expected to return an INTEGER.
* The function accepts 2D_INTEGER_ARRAY arr as parameter.
*/
publicstaticintdiagonalDifference(List<List<Integer>>arr){
// Write your code here
intleft_to_right=0;
intright_to_left=0;
intn=arr.size();
for(inti=0;i<n;i++){
for(intj=0;j<n;j++){
if(i==j){
left_to_right+=arr.get(i).get(i);
}if(j==n-i-1){
right_to_left+=arr.get(i).get(j);
}
}
}
returnMath.abs(left_to_right-right_to_left);
}
}
public class Solution {
publicstaticvoidmain(String[]args)throwsIOException{
BufferedReaderbufferedReader=newBufferedReader(newInputStreamReader(System.in));
BufferedWriterbufferedWriter=newBufferedWriter(newFileWriter(System.getenv(“OUTPUT_PATH”)));
intn=Integer.parseInt(bufferedReader.readLine().trim());
List<List<Integer>>arr=newArrayList<>();
IntStream.range(0,n).forEach(i -> {
try{
arr.add(
Stream.of(bufferedReader.readLine().replaceAll(“\\s+$”,””).split(” “))
.map(Integer::parseInt)
.collect(toList())
);
}catch(IOExceptionex){
thrownewRuntimeException(ex);
}
});
intresult=Result.diagonalDifference(arr);
bufferedWriter.write(String.valueOf(result));
bufferedWriter.newLine();
bufferedReader.close();
bufferedWriter.close();
}
}
Awesome post! Keep up the great work! 🙂