Merge pull request #4830 from espinoleandroo/main

Reto #28 - python

Retos/Reto #28 - EXPRESIÓN MATEMÁTICA [Media]/python/EspinoLeandroo.py

@@ -0,0 +1,37 @@
+import re
+
+def main():
+    expression1 = "5 + 6 / 7 - 4"
+    expression2 = "5 a 6"
+
+    print(validate_math_expression(expression1))
+    print(validate_math_expression(expression2))
+
+def validate_math_expression(expression):
+    tokens = re.split(r'\s+', expression)
+
+    if len(tokens) % 2 == 0:
+        return False
+
+    for i, token in enumerate(tokens):
+        if i % 2 == 0:
+            if not is_number(token):
+                return False
+        else:
+            if not is_operation(token):
+                return False
+
+    return True
+
+def is_number(token):
+    try:
+        float(token)
+        return True
+    except ValueError:
+        return False
+
+def is_operation(token):
+    return re.match(r'[+\-*/%]', token)
+
+if __name__ == "__main__":
+    main()