package practise9.exercises /* * 练习 3:学生成绩排序 给: val students = List( ("Tom", 80), ("Jack", 95), ("Alice", 70), ("Bob", 85) ) 使用 sortBy 按成绩从低到高排序: (Alice,70) (Tom,80) (Bob,85) (Jack,95) 提示: _._2*/ object Exercises3 { def main(args: Array[String]): Unit = { val students = List( ("Tom", 80), ("Jack", 95), ("Alice", 70), ("Bob", 85) ) val result = students.sortBy(_._2) println(result) } }