From bf9779cbea9c5c44ad8d1bc023f5265689d430a5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E5=91=A8=E6=B3=93=E7=99=BE?= <912158365@qq.com> Date: Thu, 15 Jul 2021 13:53:41 +0800 Subject: [PATCH] =?UTF-8?q?fixde:=20=E9=9A=8F=E4=BE=BF=E4=B8=8A=E4=BC=A0?= =?UTF-8?q?=E4=B8=80=E4=B8=8B?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- untletter/src/main/java/com/swpu/letter.java | 30 ++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 untletter/src/main/java/com/swpu/letter.java diff --git a/untletter/src/main/java/com/swpu/letter.java b/untletter/src/main/java/com/swpu/letter.java new file mode 100644 index 0000000..0a8ab91 --- /dev/null +++ b/untletter/src/main/java/com/swpu/letter.java @@ -0,0 +1,30 @@ +package com.swpu; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +public class letter { + public static void main(String[] args) { + List food = new ArrayList(); + var food1 = new ArrayList(); + Map price = new HashMap(); + var price2 = new HashMap(); + food.add("西红柿"); + food.add("鸡蛋"); + food1.add("猪"); + food1.add("青椒"); + System.out.println(food); + System.out.println(food1); + + + for (var i = 0; i < food.size(); i++) { + System.out.println("第" + i + "是：" + food.get(i)); + var data = food.get(i); + price.put(data, i * 2 + "$$$"); + } + System.out.println("map:" + price); + + } +} \ No newline at end of file -- Gitee