Railroad Construction: Added initial boilerplate

Railroad-Construction/cs412_railroad_a.py

@@ -0,0 +1,68 @@
+"""
+name: Nicholas Tamassia
+
+Honor Code and Acknowledgments:
+
+        This work complies with the JMU Honor Code.
+
+       Comments here on your code and submission.
+"""
+
+import pprint
+from collections import defaultdict
+from math import sqrt
+
+type Coordinate = tuple[float, float]
+type CoordMap = dict[int, Coordinate]
+type WeightedGraph = dict[int, dict[int, float]]
+
+
+def distance(a: Coordinate, b: Coordinate) -> float:
+    x1, y1 = a
+    x2, y2 = b
+    return sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2)
+
+
+def create_graph(coords: CoordMap) -> WeightedGraph:
+    graph: WeightedGraph = defaultdict(dict)
+
+    coord_items = coords.items()
+
+    for label1, coord1 in coord_items:
+        for label2, coord2 in coord_items:
+            if label1 == label2:
+                continue
+
+            weight = distance(coord1, coord2)
+            graph[label1][label2] = weight
+            graph[label2][label1] = weight
+
+    return graph
+
+
+def calculate_cost(graph: WeightedGraph) -> float:
+    cost: float = 0.0
+
+    return cost
+
+
+# All modules for CS 412 must include a main method that allows it
+# to imported and invoked from other python scripts
+def main():
+    n: int = int(input())
+
+    coords: CoordMap = {}
+
+    for i in range(0, n):
+        tokens = input().split()
+        coords[i] = (float(tokens[0]), float(tokens[1]))
+
+    weighted_graph = create_graph(coords)
+
+    pprint.pprint(weighted_graph)
+
+    # print(f"${cost:.1f}M")
+
+
+if __name__ == "__main__":
+    main()