Java tutorial
//package com.java2s; import android.util.SparseArray; public class Main { private static double getTheoreticalStudent(int n) { SparseArray<Double> theorStudent = new SparseArray<Double>(); theorStudent.put(10, 2.2281389); theorStudent.put(20, 2.0859634); theorStudent.put(30, 2.0422725); theorStudent.put(40, 2.0210754); theorStudent.put(50, 2.0085591); theorStudent.put(60, 2.0002978); theorStudent.put(70, 1.9944371); if (n >= 70) return theorStudent.get(70); else if (n >= 60) return theorStudent.get(60); else if (n >= 50) return theorStudent.get(50); else if (n >= 40) return theorStudent.get(40); else if (n >= 30) return theorStudent.get(30); else if (n >= 20) return theorStudent.get(20); else if (n >= 10) return theorStudent.get(10); else return theorStudent.get(10); } }