public static void main(String[] args) { Random random = new Random(); int a = 50; int b = 15; int c = 25; int d = 10; int ra = random.nextInt(100); if(ra<=a){ System.out.println("a"); }else if(a<ra&&ra<=a+b){ System.out.println("b"); }else if(a+b<ra&&ra<=a+b+c){ System.out.println("c"); }else if(a+b+c<ra&&ra<=a+b+c+d){ System.out.println("d"); } } 本人不才,方法有点笨
import java.util.*; public class Test24 { public static void main(String[] args) { Random r = new Random(); System.out.println("Please Choose Your Gift!"); for(Gift g : Gift.values()) { System.out.print(g.toString() + " "); } System.out.print("\n" + "Input: "); Scanner sc = new Scanner(System.in); String s = sc.nextLine(); for(Gift g : Gift.values()) { if(g.toString().equalsIgnoreCase(s)) { if (r.nextInt(100) + 1 < g.getP()) { System.out.println("You get " + g.toString()); } else { System.out.println("Sorry"); } } } } }enum Gift { A(50), B(15), C(25), D(10); private int p; private Gift(int p) {this.p = p;} public int getP() {return p;}
Random r = new Random();
if(r.nextInt(100)+1 <= n) {
//........
}
这样在100数组里面随便random出来一个下标不就搞定了么
还非要写全了呀...
Random random = new Random();
int a = 50;
int b = 15;
int c = 25;
int d = 10;
int ra = random.nextInt(100);
if(ra<=a){
System.out.println("a");
}else if(a<ra&&ra<=a+b){
System.out.println("b");
}else if(a+b<ra&&ra<=a+b+c){
System.out.println("c");
}else if(a+b+c<ra&&ra<=a+b+c+d){
System.out.println("d");
}
}
本人不才,方法有点笨
public class Test24 {
public static void main(String[] args) {
Random r = new Random();
System.out.println("Please Choose Your Gift!");
for(Gift g : Gift.values()) {
System.out.print(g.toString() + " ");
}
System.out.print("\n" + "Input: ");
Scanner sc = new Scanner(System.in);
String s = sc.nextLine();
for(Gift g : Gift.values()) {
if(g.toString().equalsIgnoreCase(s)) {
if (r.nextInt(100) + 1 < g.getP()) {
System.out.println("You get " + g.toString());
} else {
System.out.println("Sorry");
}
}
}
}
}enum Gift {
A(50), B(15), C(25), D(10);
private int p;
private Gift(int p) {this.p = p;}
public int getP() {return p;}
}