From 21561e211c6185a5f356b6ef2de2da9f239e9be4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=88=98=E9=AB=98=E7=A7=91?= <“18317545175@163.com”>
Date: Mon, 19 Dec 2022 22:54:19 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BD=9C=E4=B8=9A?=
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---
 .../20221219.md"                              | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 "42 \345\210\230\351\253\230\347\247\221/20221219.md"

diff --git "a/42 \345\210\230\351\253\230\347\247\221/20221219.md" "b/42 \345\210\230\351\253\230\347\247\221/20221219.md"
new file mode 100644
index 0000000..bf551de
--- /dev/null
+++ "b/42 \345\210\230\351\253\230\347\247\221/20221219.md"	
@@ -0,0 +1,58 @@
+# 作业
+
+```java
+import java.util.Scanner;
+
+public class adf54 {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("请输入圆的半径：");
+        int bj = scanner.nextInt();
+        System.out.println("圆的周长是：" + zc(bj));
+        System.out.println("圆的面积是：" + mj(bj));
+    }
+
+    public static double zc(int bj) {
+        return 2 * 3.14 * bj;
+    }
+
+    public static double mj(int bj) {
+        return 3.14 * bj * bj;
+    }
+}
+```
+
+```java
+import java.util.Arrays;
+import java.util.Scanner;
+
+public class adf54 {
+    public static void main(String[] args) {
+        long[] nums = new long[20];
+        for (int i = 0; i < 20; i++) {
+            nums[i] = Math.round(Math.random() * 10);
+        }
+        Scanner sc = new Scanner(System.in);
+        System.out.println("请输入一个数");
+        long X = sc.nextLong();
+        search(nums, X);
+    }
+
+    public static void search(long[] nums, long X) {
+        int count = 0;
+        for (int i = 0; i < nums.length; i++) {
+            if (X == nums[i]) {
+                count++;
+            }
+        }
+        System.out.println(Arrays.toString(nums));
+        System.out.println("次数：" + count);
+
+    }
+}
+```
+
+```java
+
+
+```
-- 
Gitee