I have 2D array and it has 2 columns and I want to sort this.
input is this:
first column..... second column
3......................2
4......................9
3......................1
5......................0
1......................2
output is this:
first column..... second column
5......................0
4......................9
3......................2
3......................1
1......................2
I beginner in Java.
please help me whit a code of function(mySort(int[][] arr) to sort the array.
You can sort with your custom comparator:
Arrays.sort(datas, new Comparator<Integer[]>() {
@Override
public int compare(Integer[] entry1, Integer[] entry2) {
if(entry1[0] == entry2[0]){
return entry2[1] - entry1[1];
}
return entry2[0] - entry1[0];
}
});