for.md

# 循环

我们希望写一个简单的查找程序，在一个单词列表 `List<String>` 中查找匹配的单词，找到的话
返回其索引，否则返回 -1。正确的选项是

## 答案

```java
public class App() {
    public int find(List<String> words, String word) {
        for(int i=0, i < words.size(); i++){
            if(word.equals(words.get(i))){
                return i;
            }
        }
        return -1;
    }
}
```

## 选项

### A

```java
public class App() {
    public int find(List<String> words, String word) {
        for(int i=1, i <= words.size(); i++){
            if(word.equals(words.get(i))){
                return i;
            }
        }
        return -1;
    }
}
```

### B

```java
public class App() {
    public int find(List<String> words, String word) {
        int point = -1;
        for(point=0, point <= words.size(); point++){
            if(!word.equals(words.get(point))){
                point = -1;
            }
        }
        return point;
    }
}
```

### C

```java
public class App() {
    public int find(List<String> words, String word) {
        int i = -1;
        for(var w: words){
            if(!word.equals(words.get(w))){
                i++;
            }
        }
        return point;
    }
}
```