状态模式(State)
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 6 namespace State 7 { 8 class Work 9 { 10 private State state; 11 public Work() 12 { 13 this.state = new ForenoonState(); 14 } 15 16 private double hour; 17 public double Hour 18 { 19 get { return hour; } 20 set { hour = value; } 21 } 22 23 public void SetState(State s) 24 { 25 this.state = s; 26 } 27 //为了调用state的行为 28 public void WriteProgram() 29 { 30 state.WriteProgram(this); 31 } 32 } 33 abstract class State 34 { 35 public abstract void WriteProgram(Work w); 36 } 37 class ForenoonState : State 38 { 39 public override void WriteProgram(Work w) 40 { 41 if (w.Hour < 12) 42 { 43 Console.WriteLine("当前时间上午{0}点,精神百倍!",w.Hour); 44 } 45 else 46 { 47 w.SetState(new NoonState()); 48 w.WriteProgram(); 49 } 50 } 51 } 52 class NoonState : State 53 { 54 public override void WriteProgram(Work w) 55 { 56 if (w.Hour < 14) 57 { 58 Console.WriteLine("当前时间中午午{0}点,想睡觉!",w.Hour); 59 } 60 else 61 { 62 w.SetState(new AfternoonState()); 63 w.WriteProgram(); 64 } 65 } 66 } 67 class AfternoonState : State 68 { 69 public override void WriteProgram(Work w) 70 { 71 if (w.Hour < 18) 72 { 73 Console.WriteLine("当前时间中午午{0}点,快下班了!", w.Hour); 74 } 75 else 76 { 77 w.SetState(new SleepingState()); 78 w.WriteProgram(); 79 } 80 } 81 } 82 class SleepingState : State 83 { 84 public override void WriteProgram(Work w) 85 { 86 Console.WriteLine("当前时间中午午{0}点,睡着了!", w.Hour); 87 } 88 } 89 class Program 90 { 91 static void Main(string[] args) 92 { 93 Work w = new Work(); 94 w.Hour = 9; 95 w.WriteProgram(); 96 w.Hour = 13; 97 w.WriteProgram(); 98 w.Hour = 17; 99 w.WriteProgram(); 100 w.Hour = 23; 101 w.WriteProgram(); 102 } 103 } 104 }
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找我内推: 字节跳动各种岗位
作者:
ZH奶酪(张贺)
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