Fix syntax and ruff issues in reverse number pattern

Author: Barnavo Dey

maths/reverse_number_pattern.py

@@ -23,13 +23,10 @@ def reverse_number_pattern(n: int) -> List[str]:
     if n <= 0:
         return []
 
-    result = []
-    for i in range(n, 0, -1):
-        line = ""
-        for x in range(1, i + 1):
-            line += str(x)
-        result.append(line)
-    return result
+    return [
+        "".join(str(x) for x in range(1, i + 1))
+        for i in range(n, 0, -1)
+    ]
 
 
 if __name__ == "__main__":