release 1.10

EinzelfunktionenExperimentierbereich/jaegerzaun.py

@@ -16,17 +16,17 @@ def array_ausgabe(arri: list):
 
 
 def encrypt(plain_text: str, rails: int):
-    arr = [["_" for x in range(len(plain_text))] for y in range(rails)]
+    arr = [["_" for _ in range(len(plain_text))] for _ in range(rails)]
     r = 0
     z = 0
     plus = True
     for b in plain_text:
         arr[r][z] = b
         z += 1
-        if r+1 == rails and plus:
+        if r + 1 == rails and plus:
             plus = False
             r -= 1
-        elif r-1 < 0 and not plus:
+        elif r - 1 < 0 and not plus:
             plus = True
             r += 1
         elif plus:
@@ -40,15 +40,44 @@ def encrypt(plain_text: str, rails: int):
                 out += arr[i][j]
     print(out)
     array_ausgabe(arr)
-    print()
 
 
 def decrypt(cipher: str, rails: int):
-    arr = [["" for x in range(len(cipher))] for y in range(rails)]
-    for r in range(rails):
-
-        #arr[r][z] = b
-        pass
+    arr = [["_" for _ in range(len(cipher))] for _ in range(rails)]
+    # cipher ins array reinbasteln
+    x, y = 0, 0
+    first_x = True
+    for b in cipher:
+        if x >= len(cipher) and y < rails:
+            y += 1
+            x = y
+            first_x = True
+        arr[y][x] = b
+        if y == 0 or (first_x and y != rails-1):
+            x = x + (rails - y - 1) * 2
+            first_x = False
+        elif y == rails-1 or first_x is False:
+            x = x + (y * 2)
+            first_x = True
+    array_ausgabe(arr)
+    # dekodierten Text aus array holen
+    out = ""
+    x, y = 0, 0
+    down = True
+    for i in range(len(cipher)):
+        out += arr[y][x]
+        x += 1
+        if down and y+1 == rails:
+            down = False
+            y -= 1
+        elif down:
+            y += 1
+        elif down is False and y == 0:
+            down = True
+            y += 1
+        elif down is False:
+            y -= 1
+    print(out)
 
 
 encrypt(t1r2, 2)