使用foreach向列表添加后缀

const list = ['item1', 'item2', 'item3'];
const suffix = '_suffix';

list.forEach((item, index) => {
  list[index] = item.concat(suffix);
});

console.log(list);

list = ['item1', 'item2', 'item3']
suffix = '_suffix'

for i in range(len(list)):
    list[i] = list[i] + suffix

print(list)

import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();
        list.add("item1");
        list.add("item2");
        list.add("item3");
        
        String suffix = "_suffix";
        
        for (String item : list) {
            int index = list.indexOf(item);
            list.set(index, item + suffix);
        }
        
        System.out.println(list);
    }
}