adding to git what I have

2024/08/08.py

@@ -0,0 +1,39 @@
+def ptAdd(pt1,pt2):
+    return [pt1[0]+pt2[0],pt1[1]+pt2[1]]
+
+def ptSub(pt1,pt2):
+    return [pt1[0]-pt2[0],pt1[1]-pt2[1]]
+
+def antennae(arr):
+    out = {}
+    for i in range(0,len(arr)):
+        for j in range(0,len(arr[i])):
+            if arr[i][j] != ".":
+                if arr[i][j] in out:
+                    out[arr[i][j]].append([i,j])
+                else:
+                    out[arr[i][j]] = [[i,j]]
+    return out
+
+def antinodes(antennae):
+    out = []
+    for a in antennae:
+        for i in range(0,len(antennae[a])):
+            for j in range(1,len(antennae[a])):
+                pt1 = antennae[a][i]
+                pt2 = antennae[a][j]
+                an1 = ptAdd(pt1,ptSub(pt1,pt2))
+                an2 = ptAdd(pt2,ptSub(pt2,pt1))
+                if an2 not in out and an2[0] >= 0 and an2[1] >= 0 and an2[0] < 50 and an2[1] < 50:
+                    out.append(an2)
+                if an1 not in out and an1[0] >= 0 and an1[1] >= 0 and an1[0] < 50 and an1[1] < 50:
+                    out.append(an1)
+    return out
+
+arr = []
+with open("input08.txt") as file:
+    for line in file:
+        arr.append([])
+        for a in line[:-1]:
+            arr[-1].append(a)
+print(len(antinodes(antennae(arr))))