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统计匹配检索规则的物品数量

题目地址

难度:

题目描述:

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 ruleKeyruleValue 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"ruleValue == typei
  • ruleKey == "color"ruleValue == colori
  • ruleKey == "name"ruleValue == namei

统计并返回 匹配检索规则的物品数量 。

示例1:

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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:

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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""name"

  • 所有字符串仅由小写字母组成

🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️解题过程🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️🙋‍♂️
解题过程:

思路:遍历数组items,统计检索结果。

c++代码:(执行用时76ms,击败94.52%,内存消耗30M,击败95.14%)

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class Solution {
public:
int countMatches(vector<vector<string>>& items, string ruleKey, string ruleValue) {
int index=0,result=0;
if(ruleKey=="color"){
index++;
}else if(ruleKey=="name"){
index+=2;
}
int m=items.size();
for(int i=0;i<m;i++){
if(items[i][index]==ruleValue){
result++;
}
}
return result;
}
};
⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳总 结⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳⏳
总结:

没有官方题解,简单😃。

------------- THE END! THANKS! -------------