modify code

Author: algorithmzuo

src/class39/IsSum.java

@@ -148,8 +148,8 @@ public static int[] randomArray(int len, int max) {
 // 对数器验证所有方法
 public static void main(String[] args) {
 int N = 20;
-int M = 20;
-int testTime = 10000;
+int M = 100;
+int testTime = 100000;
 System.out.println("测试开始");
 for (int i = 0; i < testTime; i++) {
 int size = (int) (Math.random() * (N + 1));