Java sort 2d массив
Arrays.sort(myArr, (a, b) -> a[0] - b[0]);
Curious Centipede
Arrays.sort(myArr, (a, b) -> a[0] - b[0]);
Arrays.sort(contests, (a, b) -> Integer.compare(b[0],a[0])); //decreasing order
Arrays.sort(contests, (a, b) -> Integer.compare(a[0],b[0]); //increasing order
Arrays.sort(myArr,(double[] a,double[] b)->{
//here multiple lines of code can be placed
return a[0]-b[0];
});