From fb0448853241aa73eaa62094590f06da8d0743a3 Mon Sep 17 00:00:00 2001
From: lolabird <octavia@octavianichols.com>
Date: Thu, 21 Dec 2023 04:24:56 -0700
Subject: [PATCH] Add crossings exercise

---
 thinkcspy/Chapter-16-Exercises/crossings.py | 34 +++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 thinkcspy/Chapter-16-Exercises/crossings.py

diff --git a/thinkcspy/Chapter-16-Exercises/crossings.py b/thinkcspy/Chapter-16-Exercises/crossings.py
new file mode 100644
index 0000000..1450492
--- /dev/null
+++ b/thinkcspy/Chapter-16-Exercises/crossings.py
@@ -0,0 +1,34 @@
+def cross(bank1, boat, bank2):
+    if bank1["Missionaries"] + bank1["Cannibals"] == 0 and boat["Missionaries"] + boat["Cannibals"] == 0:
+        return "Journey complete"
+    
+    elif bank1["Missionaries"] + bank1["Cannibals"] > 0 and boat["Missionaries"] + boat["Cannibals"] < 2:
+        if bank1["Missionaries"] - 1 >= bank1["Cannibals"]:
+            bank1["Missionaries"] -= 1 
+            boat["Missionaries"] += 1
+            print(bank1, boat, bank2)
+        elif bank1["Cannibals"] > 0:
+            bank1["Cannibals"] -= 1
+            boat["Cannibals"] += 1
+            print(bank1, boat, bank2)
+        
+    else:
+        if boat["Cannibals"] >= 1 and bank2["Missionaries"] >= bank2["Cannibals"] + 1:
+            bank2["Cannibals"] += 1
+            boat["Cannibals"] -= 1
+        elif boat["Missionaries"] >= 1:
+             bank2["Missionaries"] += 1 
+             boat["Missionaries"] -= 1
+        print(bank1, boat, bank2)
+
+    cross(bank1, boat, bank2)
+         
+
+def main():
+    bank1 = {"name": "B1", "Missionaries": 3, "Cannibals": 3}
+    bank2 = {"name": "B2", "Missionaries": 0, "Cannibals": 0}
+    boat = {"name": "boat", "Missionaries": 0, "Cannibals": 0}
+
+    return cross(bank1, boat, bank2)
+
+print(main())
\ No newline at end of file