Desafio

Dada a entrada na forma em <n1>, <n2>que o número pode ser -1, 0 ou 1, retorne a direção cardinal correspondente . Os números positivos movem-se para leste no eixo x e o sul no eixo y, os números negativos movem-se para oeste no eixo x e o norte no eixo y.

Saída deve ser na forma South East, North East,North . Faz distinção entre maiúsculas e minúsculas.

Se a entrada for 0, 0, seu programa deve retornar That goes nowhere, silly!.

Exemplo de entrada / saída:

1, 1 -> South East

0, 1 -> South

1, -1 -> North East

0, 0 -> That goes nowhere, silly!

Isso é código-golfe , a resposta mais curta em bytes vence.

Japonês , 55 51 bytes

`
SÆ 
NÆ° `·gV +`
E†t
Wƒt`·gU ª`T•t goƒ Í2€e, Ðéy!

Explicação

                      // Implicit: U, V = inputs
`\nSÆ \nNÆ° `       // Take the string "\nSouth \nNorth ".
·                     // Split it at newlines, giving ["", "South ", "North "].
gV                    // Get the item at index V. -1 corresponds to the last item.
+                     // Concatenate this with
`\nE†t\nWƒt`·gU       // the item at index U in ["", "East", "West"].
ª`T•t goƒ Í2€e, Ðéy!  // If the result is empty, instead take "That goes nowhere, silly!".
                      // Implicit: output result of last expression

Experimente online!

Python, 101 87 bytes

Solução realmente ingênua.

lambda x,y:['','South ','North '][y]+['','West','East'][x]or'That goes nowhere, silly!'

Obrigado a @Lynn por salvar 14 bytes! Alterações: o uso do método string.split na verdade o torna mais longo; _; E também, índices negativos existem em python.

PHP, 101 bytes

[,$b,$a]=$argv;echo$a|$b?[North,"",South][1+$a]." ".[West,"",East][1+$b]:"That goes nowhere, silly!";

Perl 6 , 79 bytes

{<<'' East South North West>>[$^y*2%5,$^x%5].trim||'That goes nowhere, silly!'}

Tente

Expandido:

{ # bare block lambda with placeholder parameters ｢$x｣ and ｢$y｣

  << '' East South North West >>\ # list of 5 strings
  [                               # index into that with:

    # use a calculation so that the results only match on 0
    $^y * 2 % 5, # (-1,0,1) => (3,0,2) # second parameter
    $^x % 5      # (-1,0,1) => (4,0,1) # first parameter

  ]
  .trim  # turn that list into a space separated string implicitly
         # and remove leading and trailing whitespace

  ||     # if that string is empty, use this instead
  'That goes nowhere, silly!'
}

JavaScript (ES6), 106 100 97 93 bytes

É uma abordagem muito simples. Consiste em alguns operadores ternários aninhados juntos -

f=a=>b=>a|b?(a?a>0?"South ":"North ":"")+(b?b>0?"East":"West":""):"That goes nowhere, silly!"

Casos de teste

f=a=>b=>a|b?(a?a>0?"South ":"North ":"")+(b?b>0?"East":"West":""):"That goes nowhere, silly!"

console.log(f(1729)(1458));
console.log(f(1729)(-1458));
console.log(f(-1729)(1458));
console.log(f(-1729)(-1458));
console.log(f(0)(1729));
console.log(f(0)(-1729));
console.log(f(1729)(0));
console.log(f(-1729)(0));

Batch, 156 bytes

@set s=
@for %%w in (North.%2 South.-%2 West.%1 East.-%1)do @if %%~xw==.-1 call set s=%%s%% %%~nw
@if "%s%"=="" set s= That goes nowhere, silly!
@echo%s%

The for loop acts as a lookup table to filter when the (possibly negated) parameter equals -1, and concatenating the matching words. If nothing is selected then the silly message is printed instead.

JavaScript (ES6), 86 bytes

a=>b=>["North ","","South "][b+1]+["West","","East"][a+1]||"That goes nowhere, silly!"

Explicação

Chame-o com sintaxe de curry ( f(a)(b)). Isso usa índices de matriz. Se ambos ae bforem 0, o resultado é uma sequência vazia e falsa. Nesse caso, a sequência após o ||é retornada.

Tente

Experimente todos os casos de teste aqui:

let f=
a=>b=>["North ","","South "][b+1]+["West","","East"][a+1]||"That goes nowhere, silly!"

for (let i = -1; i < 2; i++) {
    for (let j = -1; j < 2; j++) {
        console.log(`${i}, ${j}: ${f(i)(j)}`);
    }
}

GNU sed , 100 + 1 (sinalizador r) = 101 bytes

s:^-1:We:
s:^1:Ea:
s:-1:Nor:
s:1:Sou:
s:(.*),(.*):\2th \1st:
s:0...?::
/0/cThat goes nowhere, silly!

Por design, o sed executa o script quantas vezes houver linhas de entrada, para que você possa executar todos os casos de teste em uma execução, se necessário. O link do TIO abaixo faz exatamente isso.

Experimente online!

Explicação:

s:^-1:We:                         # replace '-1' (n1) to 'We'
s:^1:Ea:                          # replace '1' (n1) to 'Ea'
s:-1:Nor:                         # replace '-1' (n2) to 'Nor'
s:1:Sou:                          # replace '1' (n2) to 'Sou'
s:(.*),(.*):\2th \1st:            # swap the two fields, add corresponding suffixes
s:0...?::                         # delete first field found that starts with '0'
/0/cThat goes nowhere, silly!     # if another field is found starting with '0',
                                  #print that text, delete pattern, end cycle now

O espaço de padrão restante no final de um ciclo é impresso implicitamente.

05AB1E , 48 45 43 bytes

õ'†Ô'…´)èUõ„ƒÞ „„¡ )èXJ™Dg_i“§µ—±æÙ,Ú¿!“'Tì

Experimente online!

Explicação

õ'†Ô'…´)                                       # push the list ['','east','west']
        èU                                     # index into this with first input
                                               # and store the result in X
          õ„ƒÞ „„¡ )                           # push the list ['','south ','north ']
                    èXJ                        # index into this with 2nd input
                                               # and join with the content of X
                       ™                       # convert to title-case
                        Dg_i                   # if the length is 0
                            “§µ—±æÙ,Ú¿!“       # push the string "hat goes nowhere, silly!"
                                        'Tì    # prepend "T"

Jelly, 40 bytes

Ṛị"“¡ƘƓ“¡+9“»,“wµ“¡ḳ]“»Kt⁶ȯ“¬ɼ¬<¬O÷ƝḤẎ6»

Try it online!

Japt, 56 bytes

N¬¥0?`T•t goƒ Í2€e, Ðéy!`:` SÆ NÆ°`¸gV +S+` E†t Wƒt`¸gU

Try it online! | Test Suite

Explanation:

N¬¥0?`Tt go Í2e, Ðéy!`:` SÆ NÆ°`¸gV +S+` Et Wt`¸gU
Implicit U = First input
         V = Second input

N´0?`...`:` ...`qS gV +S+` ...`qS gU
N¬                                                     Join the input (0,0 → "00")
  ¥0                                                   check if input is roughly equal to 0. In JS, "00" == 0
    ?                                                  If yes:
      ...                                               Output "That goes nowhere, silly!". This is a compressed string
     `   `                                              Backticks are used to decompress strings
          :                                            Else:
           ` ...`                                       " South North" compressed
                 qS                                     Split on " " (" South North" → ["","South","North"])
                   gV                                   Return the string at index V
                     +S+                                +" "+ 
                        ` ...`                          " East West" compressed
                              qS gU                     Split on spaces and yield string at index U

Retina, 84 82 81 bytes

1 byte saved thanks to @seshoumara for suggesting 0...? instead of 0\w* ?

(.+) (.+)
$2th $1st
^-1
Nor
^1
Sou
-1
We
1
Ea
0...?

^$
That goes nowhere, silly!

Try it online!

Swift 151 bytes

func d(x:Int,y:Int){x==0&&y==0 ? print("That goes nowhere, silly!") : print((y<0 ? "North " : y>0 ? "South " : "")+(x<0 ? "West" : x>0 ? "East" : ""))}

PHP, 95 bytes.

This simply displays the element of the array, and if there's nothing, just displays the "default" message.

echo['North ','','South '][$argv[1]+1].[East,'',West][$argv[2]+1]?:'That goes nowhere, silly!';

This is meant to run with the -r flag, receiving the coordenates as the 1st and 2nd arguments.

C#, 95 102 bytes

Golfed

(a,b)=>(a|b)==0?"That goes nowhere, silly!":(b<0?"North ":b>0?"South ":"")+(a<0?"West":a>0?"East":"");

Ungolfed

( a, b ) => ( a | b ) == 0
    ? "That goes nowhere, silly!"
    : ( b < 0 ? "North " : b > 0 ? "South " : "" ) +
      ( a < 0 ? "West" : a > 0 ? "East" : "" );

Ungolfed readable

// A bitwise OR is perfomed
( a, b ) => ( a | b ) == 0

    // If the result is 0, then the 0,0 text is returned
    ? "That goes nowhere, silly!"

    // Otherwise, checks against 'a' and 'b' to decide the cardinal direction.
    : ( b < 0 ? "North " : b > 0 ? "South " : "" ) +
      ( a < 0 ? "West" : a > 0 ? "East" : "" );

Full code

using System;

namespace Namespace {
    class Program {
        static void Main( string[] args ) {
            Func<Int32, Int32, String> f = ( a, b ) =>
                ( a | b ) == 0
                    ? "That goes nowhere, silly!"
                    : ( b < 0 ? "North " : b > 0 ? "South " : "" ) +
                      ( a < 0 ? "West" : a > 0 ? "East" : "" );

            for( Int32 a = -1; a <= 1; a++ ) {
                for( Int32 b = -1; b <= 1; b++ ) {
                    Console.WriteLine( $"{a}, {b} = {f( a, b )}" );
                }
            }

            Console.ReadLine();
        }
    }
}

Releases

• v1.1 - + 7 bytes - Wrapped snippet into a function.
• v1.0 -  95 bytes - Initial solution.

Notes

I'm a ghost, boo!

Scala, 107 bytes

a=>b=>if((a|b)==0)"That goes nowhere, silly!"else Seq("North ","","South ")(b+1)+Seq("West","","East")(a+1)

Experimente online

Para usar isso, declare isso como uma função e chame-o:

val f:(Int=>Int=>String)=...
println(f(0)(0))

Como funciona

a =>                                // create an lambda with a parameter a that returns
  b =>                              // a lambda with a parameter b
    if ( (a | b) == 0)                // if a and b are both 0
      "That goes nowhere, silly!"       // return this string
    else                              // else return
      Seq("North ","","South ")(b+1)    // index into this sequence
      +                                 // concat
      Seq("West","","East")(a+1)        // index into this sequence

C, 103 bytes

f(a,b){printf("%s%s",b?b+1?"South ":"North ":"",a?a+1?"East":"West":b?"":"That goes nowhere, silly!");}

Java 7, 130 bytes

String c(int x,int y){return x==0&y==0?"That goes nowhere, silly!":"North xxSouth ".split("x")[y+1]+"WestxxEast".split("x")[x+1];}

Explicação:

String c(int x, int y){               // Method with x and y integer parameters and String return-type
  return x==0&y==0 ?                  //  If both x and y are 0:
     "That goes nowhere, silly!"      //   Return "That goes nowhere, silly!"
    :                                 //  Else:
     "North xxSouth ".split("x"[y+1]  //   Get index y+1 from array ["North ","","South "] (0-indexed)
     + "WestxxEast".split("x")[x+1];  //   Plus index x+1 from array ["West","","East"] (0-indexed)
}                                     // End of method

Código do teste:

Experimente aqui.

class M{
  static String c(int x,int y){return x==0&y==0?"That goes nowhere, silly!":"North xxSouth ".split("x")[y+1]+"WestxxEast".split("x")[x+1];}

  public static void main(String[] a){
    System.out.println(c(1, 1));
    System.out.println(c(0, 1));
    System.out.println(c(1, -1));
    System.out.println(c(0, 0));
  }
}

Resultado:

South East
South 
North East
That goes nowhere, silly!

CJam , 68 bytes

"
South 
North 

East
West"N/3/l~W%.=s_Q"That goes nowhere, silly!"?

Experimente online! ou verifique todos os casos de teste

Imprime um espaço à direita em [0 -1]ou [0 1]( Northou South).

Explicação

"\nSouth \nNorth \n\nEast\nWest"  e# Push this string
N/                                e# Split it by newlines
3/                                e# Split the result into 3-length subarrays,
                                  e#  gives [["" "South " "North "]["" "East" "West"]]
l~                                e# Read and eval a line of input
W%                                e# Reverse the co-ordinates
.=                                e# Vectorized get-element-at-index: accesses the element
                                  e#  from the first array at the index given by the 
                                  e#  y co-ordinate. Arrays are modular, so -1 is the last
                                  e#  element. Does the same with x on the other array.
s                                 e# Cast to string (joins the array with no separator)
_                                 e# Duplicate the string
Q"That goes nowhere, silly!"?     e# If it's non-empty, push an empty string. If its empty, 
                                  e#  push "That goes nowhere, silly!"

Röda, 100 bytes

f a,b{["That goes nowhere, silly!"]if[a=b,a=0]else[["","South ","North "][b],["","East","West"][a]]}

Try it online!

This is a trivial solution, similar to some other answers.