✨ feat(solutions/0009)：添加欧拉项目第9题的解决方案

solutions/0009/eular_9.py

@@ -0,0 +1,18 @@
+"""
+a^2 + b^2 = c^2
+a + b + c = 1000
+FIND a*b*c
+"""
+
+
+def euler_9():
+    for a in range(1, 1000):
+        for b in range(a, 1000):
+            c = 1000 - a - b
+            if a**2 + b**2 == c**2:
+                print(f"Found a={a}, b={b}, c={c}")
+                return a * b * c
+
+
+if __name__ == "__main__":
+    print(euler_9())