Rename files, add headers, fix typos in 13

thinkcspy/Chapter-16-Exercises/Problem9and10_gallons.py

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+# Runestone.Academy thinkcspy course
+# Chapter 16
+# Problems 9 and 10
+
+def fillJug(rounds, jugA, jugB, target):
+    pour = 0
+
+    if jugA["state"] == target:
+        print("Target reached")
+        return 
+    else:
+        if jugB["state"] == 0:
+            jugB["state"] += jugB["cap"] #fill jugB
+            print(rounds, jugA, jugB)
+        
+        if jugA["state"] == 0:
+            pour = jugB["state"] - jugA["state"]
+        else:
+            pour = jugA["cap"] - jugA["state"]
+            
+        #fill jugA with the contents of jugB
+        jugA["state"] += pour
+        jugB["state"] -= pour
+        print(rounds, jugA, jugB)
+
+        if jugA["state"] == jugA["cap"]:
+            jugA["state"] = 0 #empty jugA if full
+            print(rounds, jugA, jugB)
+        
+        fillJug(rounds + 1, jugA, jugB, target)
+
+
+def main():
+    jugA = {"name": "Jug A", "state": 0, "cap": 4}
+    jugB = {"name": "Jug B", "state": 0, "cap": 3}
+    target = 2
+
+    return fillJug(1, jugA, jugB, target)
+
+
+main()