printing a 2d array in proper format

[turbid plover]

    public static int[][] merge(int[][] intervals) {

        if (intervals.length <= 1) return intervals;
        Arrays.sort(intervals, Comparator.comparingInt(a -> a[0]));
        List<int[]> result = new ArrayList<>();

        int[] newInterval = intervals[0];
        result.add(newInterval);

        for (int[] interval : intervals) {
            if (interval[1] >= newInterval[0]) newInterval[1] = Math.max(interval[1], newInterval[1]);
            else {
                newInterval = interval;
                result.add(newInterval);
            }
        }

        return result.toArray(new int[result.size()][]);

    }

    public static void main(String[] args) {
        int[][] intervals = {{1, 3}, {2, 6}, {8, 10}, {15, 18}};
        System.out.println(merge(intervals));

    }

Hello, I am trying to test out my code / debug it a bit.. when I run it this is my output : [[I@24d46ca6 how do i avoid this and get a 2d array output?

[burnt flint]

Detected code, here are some useful tools:

Formatted code

public static int [] [] merge(int [] [] intervals) {
  if (intervals.length <= 1) return intervals;
  Arrays.sort(intervals, Comparator.comparingInt(a -> a[0] ));
  List < int []  > result = new ArrayList<>();
  int [] newInterval = intervals[0] ;
  result.add(newInterval);
  for (int [] interval : intervals) {
    if (interval[1]  >= newInterval[0] ) newInterval[1]  = Math.max(interval[1] , newInterval[1] );
    else {
      newInterval = interval;
      result.add(newInterval);
    }
  }
  return result.toArray(new int [result.size() ] [] );
}
public static void main(String[] args) {
  int [] [] intervals = {
      {
      1, 3}
    , {
      2, 6}
    , {
      8, 10}
    , {
      15, 18}
  };
  System.out.println(merge(intervals));
}

<@&987246399047479336> please have a look, thanks.

[burnt flint]

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[turbid plover]

I tried .toString()... but it doesnt let me since thats not the return type of my method

System.out.println(Arrays.toString(merge(intervals)));

also gives me the same weird output

[quartz zenith]

Since its an array that you're returning back, youll want to print the contents out.

public void printArray(int array[][]){
for(int x=0; x<array.length; x++){
for(int y=0; y<array[x].length; y++){
System.out.println(array[x][y]);
}
}
}

then you'll want to call this by doing

printArray(merge(intervals));

instead of the System.out.println(merge(intervals)) that you have

[burnt flint]

Detected code, here are some useful tools:

Formatted code

public void printArray(int array[] [] ) {
  for (int x = 0; x < array.length; x++) {
    for (int y = 0; y < array[x] .length; y++) {
      System.out.println(array[x] [y] );
    }
  }
}

[turbid plover]

ahhh i see

thank you!

[quartz zenith]

Youll want to do System.out.print(array[x][y]) then a System.out.println() after the nested loop is completed

that way you can see everything in a more 2d array looking way... the above code will print each number from left to right on its own line

[smoky tusk]

if you dont mind it looking kinda ugly there is also Arrays.deepToString(your2dArray)

you dont need any of ur own code for that