`

/*  绘制余弦曲线*/public class Cosine { public static void main(String[] args) {  double y;  int x, m;/*    for(y=1; y>=-1; y-=0.1) {   System.out.print((int)(Math.acos(y) * 100) + ",");  }  System.out.pr

/***杨辉三角*/public class PascalTriangle {  public static int getValue(int x, int y) {  int value;  if(y == 1 || y == x+1) return 1;  else return (getValue(x-1, y-1) + getValue(x-1, y)); }  public stat