add solution of 1773

1773. Count Items Matching a Rule
- https://leetcode.com/problems/count-items-matching-a-rule/

Author: rushirg

solutions/count-items-matching-a-rule.py

@@ -0,0 +1,21 @@
+"""
+1773. Count Items Matching a Rule
+- https://leetcode.com/problems/count-items-matching-a-rule/
+"""
+
+# Method 1
+# Sequential
+
+class Solution:
+    def countMatches(self, items: List[List[str]], ruleKey: str, ruleValue: str) -> int:
+        keyDict = {
+            "type" :    0,
+            "color" :   1,
+            "name" :    2
+        }
+        ruleKeyValue = keyDict[ruleKey]
+        count = 0
+        for item in items:
+            if item[ruleKeyValue] == ruleValue:
+                count += 1
+        return count