Thanks for answering.
If I change this :
string verticaldirection="";
string horizontaldirection="";
to this:
char verticaldirection=’’;
char horizontaldirection=’’;
and then do for example:
verticaldirection=‘S’;
It does not work, I have to use string and verticaldirection=“S”;
Weird no ?
char verticaldirection=''
what language is this? In most languages this is invalid and won’t compile or will throw an error at runtime (because there is no “empty” char, char is always one symbol while a string can be zero or more symbols )
Oh ok, that must be why then. The language is C++. Thanks for the info, this is really appreciated 
Hi there,
I just wondered why I couldn’t set $directionX without value just like $directionX; Why it must be set with null value like $directionX = ‘’;
Cheers
Hi,
Why with the VB.NET language, the solution doesn’t work for the points 3 and 4 (the easy angle and the optimal angle)?
What’s wrong in my script?
Sub Main ()
Dim inputs as String()
Dim lightX as Integer ' the X position of the light of power
Dim lightY as Integer ' the Y position of the light of power
Dim initialTX as Integer ' Thor's starting X position
Dim initialTY as Integer ' Thor's starting Y position
inputs = Console.ReadLine().Split(" ")
lightX = inputs(0)
lightY = inputs(1)
initialTX = inputs(2)
initialTY = inputs(3)
dim thorx as integer = initialTX
dim thory as integer = initialTY
Dim directionx as String =""
Dim directiony as String = ""
' game loop
While True
Dim remainingTurns as Integer
remainingTurns = Console.ReadLine() ' The remaining amount of turns Thor can move. Do not remove this line.
if thorx > lightx then
directionx = "W"
thorx = thorx - 1
else if thorx < lightx then
directionx= "E"
thorx= thorx + 1
end if
If thory > lighty then
directiony = "N"
thory= thory - 1
else if thory < lighty then
directiony = "S"
thory = thory + 1
end if
Console.WriteLine(directiony & directionx)
End While
End Sub
End Module
Because directionX/Y variables defines outside the loop and you’re not clean they after output, so they preserve their value between iterations, whereas they shouldn’t do that
Hi. I wrote a solution in C#.
Everything passes except the third case after submitting.
I innately look for my fault when things go wrong, however…
if (LX>TX) {
if (LY==TY) {s="E"; TX++;};
if (LY>TY) {s="SE";TX++;TY++;};
if (LY<TY) {s="NE";TX++;TY--;};
}
if (LX<TX) {
if (LY<TY) {s="NW"; TX--; TY--;};
if (LY>TY) {s="SW"; TX--; TY++; };
if (LY==TY) {s="W";TX--;};
}
if (LX==TX) {
if (LY>TY) {s="S"; TY++;};
if (LY<TY) {s="N";TY--;};
}
Using this code I have passed three test, but test easy angle didn’t passed (
When Thor went to the bottom of the field, he didn’t increse his coordinates by 17…
what is wrong?
Standard Output Stream:
SW
Game information:
Thor’s moving…
Thor position = (19,16). Light position = (0,17). Energy = 32
13
33
Standard Output Stream:
W
Game information:
Thor’s moving…
Thor position = (18,16). Light position = (0,17). Energy = 31
It is a good example to illustrate how a functional code would be both safer and easier to read than an imperative one. Keeping with the latter, I think you should quickly understand why you need some “else” in your code once you have renamed TX and TY with their true names:
mutable_TX/TY_which_could_well_have_been_modified_two_lines_above
If, out of curiosity, you want to grasp how a functional code would has been safer to design here, simply force yourself to only use “final” / “const” (or whatever could make them imutable) variables.
Note: you don’t need to put a semicolon after a closing brace.
It’s likely you’re hitting a scenario where you’re doing 2 operations in the same pass. For instance, if LX == TX + 1 and LY == TY, then you’ll fall into the LX == TX check a few lines down.
Hi guys !
I’m a beginner and i don’t understand my mistake on Thor.
I wrote in Python a while : while light_x != Thor_X and light_y !=Thor_Y :
and then i wrote 8 if, one for each direction. I saw that it is not the easiest way described in the pseudo code but it should still work, right ?8 ifs can work, but you need to make sure you only execute one of them per loop (see the post above yours).
There are simpler ways, too. What about just checking North vs South, then East vs West?
hi I am kwebblecop how do I play this game?
Have you read the statement?
You have a help in the statement too.
I didn’t realise that this was about conditions, so I solved the general problem of executing the optimal move on an open 2D field.
The solution uses no conditions at all, it uses trigonometry and rounding to find the correct index in a list of predefined Move objects, and executes the found move, summing the result with the current position to update it.
The disadvantage:
The advantage:
I’m programming in C. Can anyone help explain to me why my variables char *directionX and char *directionY only work as pointers?
maybe they are zero-terminated strings? also you should have enough space in output buffer to concatenate strings if moving diagonally
very new to programing and I’m a little stuck at 50% success. I’m not sure why its stopping the code from the next step saying its out of parameters the angle tests wont pass
(don’t know how to put code on here to show you)
basically i put if else statements as parameters
if light_y != initial_ty: #does he need to move up or down or none (north or south or none)
if light_y > initial_ty:
y = "S"
else:
y = "N"
else:
y = ""
and the same for the x axis then printing direction which is defined as y+x
any tips on what im doing wrong as to why it wont work for the angles thank you
Do you update Thor’s coordinates?
… i guess not…wow right in front of my face.
thanks =)