ArrayList Properties
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```\nclass Solution {\n    public int countMatches(List<List<String>> items, String ruleKey, String ruleValue) {\n        int col = -1;\n        if (ruleKey.equals("type"))\n            col = 0;\n        else if (ruleKey.equals("color"))\n            col = 1;\n        else\n            col = 2;\n\n        int count = 0;\n        for (int i = 0; i < items.size(); i++) {\n            if (items.get(i).get(col).equals(ruleValue)) {\n                count++;\n            }\n        }\n        return count;\n    }\n}\n\n```
['Java']