first commit

fengshiji1.java

@@ -0,0 +1,16 @@
+package fengshiji;
+import  java.math.*;
+public class fengshiji1 
+{
+	public double duishu(double a,double b)
+	{
+		double res = log(a, b);
+	return res;
+	}
+
+	private double log(double a, double b) {
+		double h=Math.log10(b)/Math.log10(a);
+		return h;
+	}
+
+}

zhishu.java

@@ -1,17 +0,0 @@
-public class zhishu{
-
-　　public double zhishu（double x，double y） {
-　　if (y==0)
-            return 1;
-        else if(y==1)
-            return x;
-        else if(oushu(y))
-            return zhishu(x*x,y/2);
-        else  return zhishu(x*x,(y-1)/2)*x
-　　}
-    private boolean oushu(int n){
-        if(n%2==0)
-            return true;
-        else return false;
-    }
-}