* 复利公式: F = p* ( (1+r)^n ); F 最终收入 p 本金 r 年利率 n 存了多少年 */ publicclassMillionaire{ publicstaticvoidmain(String[] args){ int p = 1000,n; float r = 0.2F; int F=0 ; for (int i = 0; F<=100000; i++) { F=(int) (p*((r/12)+1)); p+=1000; if (F>=100000) { n=i/12; System.out.println(n); } } } }
import java.util.Scanner; /*计算数的阶乘*/ publicclassFactorial{ publicstaticvoidmain(String[] args){ Scanner s = new Scanner(System.in); System.out.println("请输入一个整数:"); int n = s.nextInt(); int fac = 1; while(n>=1){ fac *=n; n--; } System.out.println("阶乘是:" + fac); } }