Initial data commit

Task/Euler-method/Ada/euler-method-2.ada

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+package body Euler is
+   function Solve
+            (  F      : not null access function (T, Y : Number) return Number;
+               Y0     : Number;
+               T0, T1 : Number;
+               N      : Positive
+            )  return Waveform is
+      dT : constant Number := (T1 - T0) / Number (N);
+   begin
+      return Y : Waveform (0..N) do
+         Y (0) := Y0;
+         for I in 1..Y'Last loop
+            Y (I) := Y (I - 1) + dT * F (T0 + dT * Number (I - 1), Y (I - 1));
+         end loop;
+      end return;
+   end Solve;
+end Euler;