java - java中对象列表的字母数字排序

Question

请帮我对下面给出的对象列表进行排序

Input: List list = [ob1,ob2,ob3,ob4] 
        ob1 = ["BH11", "val2", "val3"];
        ob2 = ["BH1", "val4", "val5"];
        ob3 = ["BH12", "val6", "val7"];
        ob4 = ["BH2", "val8", "val9"];

根据每个对象索引 0 处的值排序后，即 BH11、BH1 等。 预期输出:sortedList = [ob2,ob4,ob1,ob3]

Answer 1

尝试使用

Collection.sort(list, (a,b)->{return a[0].compareTo(b[0])});