Added Count Items Matching a Rule.java

varunu28 · web-flow · commit a9ca5672e438 · 2021-02-27T21:42:26.000-08:00
diff --git a/Easy/Count Items Matching a Rule.java b/Easy/Count Items Matching a Rule.java
@@ -0,0 +1,6 @@
+class Solution {
+  public int countMatches(List<List<String>> items, String ruleKey, String ruleValue) {
+    int ruleIdx = ruleKey.equals("type") ? 0 : (ruleKey.equals("color") ? 1 : 2);
+    return (int) items.stream().filter(item -> item.get(ruleIdx).equals(ruleValue)).count();
+  }
+}
