Sum of int[][] rows as int[] (Java)
Since you use Java 8 you can use:
return Arrays.stream(matrix) // Stream<int[]>
.mapToInt(row -> Arrays.stream(row).sum()) // IntStream
...
Java 8 Stream Filter
You can write your own predicate:
final Predicate<Map.Entry<?, String>> valueNotNullOrEmpty
= e -> e.getValue() != null &&...
-1 left shift by 31
I know -1<<31 will give 100000000000000000, so it should give ans (int)Math.pow(2,31) that is equals to 2147483648
That would be the case if int...