给你一个数组 items
,其中 items[i] = [typei, colori, namei]
,描述第 i
件物品的类型、颜色以及名称。
另给你一条由两个字符串 ruleKey
和 ruleValue
表示的检索规则。
如果第 i
件物品能满足下述条件之一,则认为该物品与给定的检索规则 匹配 :
ruleKey == "type"
且ruleValue == typei
。ruleKey == "color"
且ruleValue == colori
。ruleKey == "name"
且ruleValue == namei
。
统计并返回 匹配检索规则的物品数量 。
示例 1:
输入:items = [["phone","blue","pixel"],["computer","silver","lenovo"],["phone","gold","iphone"]], ruleKey = "color", ruleValue = "silver" 输出:1 解释:只有一件物品匹配检索规则,这件物品是 ["computer","silver","lenovo"] 。
示例 2:
输入:items = [["phone","blue","pixel"],["computer","silver","phone"],["phone","gold","iphone"]], ruleKey = "type", ruleValue = "phone" 输出:2 解释:只有两件物品匹配检索规则,这两件物品分别是 ["phone","blue","pixel"] 和 ["phone","gold","iphone"] 。注意,["computer","silver","phone"] 未匹配检索规则。
提示:
1 <= items.length <= 104
1 <= typei.length, colori.length, namei.length, ruleValue.length <= 10
ruleKey
等于"type"
、"color"
或"name"
- 所有字符串仅由小写字母组成
import java.util.ArrayList;
import java.util.List;
public class Solution5689 {
public int countMatches(List<List<String>> items, String ruleKey, String ruleValue) {
int count = 0;
for (int i = 0; i < items.size(); i++) {
if (ruleKey.equals("type")) {
if (items.get(i).get(0).equals(ruleValue)) {
count++;
}
}
if (ruleKey.equals("color")) {
if (items.get(i).get(1).equals(ruleValue)) {
count++;
}
}
if (ruleKey.equals("name")) {
if (items.get(i).get(2).equals(ruleValue)) {
count++;
}
}
}
return count;
}
public static void main(String[] args) {
Solution5689 sol = new Solution5689();
List<List<String>> items = new ArrayList<List<String>>();
ArrayList<String> item1 = new ArrayList<String>();
item1.add("phone");
item1.add("blue");
item1.add("pixel");
items.add(item1);
ArrayList<String> item2 = new ArrayList<String>();
item2.add("computer");
item2.add("silver");
item2.add("lenovo");
items.add(item2);
ArrayList<String> item3 = new ArrayList<String>();
item3.add("phone");
item3.add("gold");
item3.add("iphone");
items.add(item3);
String ruleKey = "color";
String ruleValue = "silver";
System.out.println(items);
System.out.println(sol.countMatches(items, ruleKey, ruleValue));
}
}