feat: add python and java solutions to leetcode problem: No.1507

1507. Reformat Date

Author: yanglbme

README.md

@@ -157,16 +157,16 @@
 
 ## 维护者
 
-[Yang Libin](https://github.com/yanglbme): GitHub / Gitee 技术社区 @Doocs 创建者；[@TheAlgorithms](https://github.com/TheAlgorithms) 组织成员。
+[Yang Libin](https://github.com/yanglbme): GitHub / Gitee 技术社区 @Doocs 创建者；开源组织 [@TheAlgorithms](https://github.com/TheAlgorithms) 核心成员之一。
 
 ## 加入我们
 
 刷编程题的最大好处就是可以锻炼解决问题的思维能力。相信我，「如何去思考」​ 本身也是一项需要不断学习和练习的技能。非常感谢前微软工程师、现蚂蚁金服技术专家 [@kfstorm](https://github.com/kfstorm) 贡献了本项目的所有 [C# 题解](https://github.com/doocs/leetcode/pull/245)。
 
 如果你对本项目感兴趣，并且希望加入我们刷题大军，欢迎随时提交 [PR](https://github.com/doocs/leetcode/pulls)。请参考如下步骤：
 
-1. 将本项目 <kbd>fork</kbd> 到你的个人 GitHub / Gitee 帐户，然后 <kbd>clone</kbd> 到你的本地机器；
-1. 对项目做出一些变更，然后使用 git <kbd>add</kbd>、<kbd>commit</kbd>、<kbd>push</kbd> 等命令将你的变更提交到你的远程 GitHub / Gitee 仓库；
+1. 将本项目 fork 到你的个人 GitHub / Gitee 帐户，然后 clone 到你的本地机器；
+1. 对项目做出一些变更，然后使用 git add、commit、push 等命令将你的变更提交到你的远程 GitHub / Gitee 仓库；
 1. 将你的变更以 PR 的形式提交过来，项目的维护人员会在第一时间对你的变更进行 review！
 1. 你也可以参考帮助文档「[GitHub](https://help.github.com/cn) / [Gitee](https://gitee.com/help)」了解更多细节。
 

README_EN.md

@@ -154,8 +154,8 @@ Complete solutions to [LeetCode](https://leetcode-cn.com/problemset/all/), [LCOF
 
 I'm looking for long-term contributors/partners to this repo! Send me [PRs](https://github.com/doocs/leetcode/pulls) if you're interested! See the following:
 
-1. <kbd>Fork</kbd> [this repository](https://github.com/doocs/leetcode) to your own GitHub account and then <kbd>clone</kbd> it to your local machine.
-1. Make some changes to your leetcode repository, then <kbd>add</kbd>, <kbd>commit</kbd> and <kbd>push</kbd> the changes to your remote GitHub repository.
+1. Fork [this repository](https://github.com/doocs/leetcode) to your own GitHub account and then clone it to your local machine.
+1. Make some changes to your leetcode repository, then push the changes to your remote GitHub repository.
 1. Create a pull request with your changes!
 1. See [CONTRIBUTING](https://github.com/doocs/.github/blob/main/CONTRIBUTING.md) or [GitHub Help](https://help.github.com/en) for more details.
 

solution/1500-1599/1507.Reformat Date/README.md

@@ -53,22 +53,45 @@
 
 <!-- 这里可写通用的实现逻辑 -->
 
+切分 `date` 字符串，获取对应的 `year`, `month`, `day`，然后拼接起来即可。
+
 <!-- tabs:start -->
 
 ### **Python3**
 
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```python
-
+class Solution:
+    def reformatDate(self, date: str) -> str:
+        months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
+        mapper = {v: str(k + 1) for k, v in enumerate(months)}
+        split = date.split(' ')
+        year = split[2]
+        month = mapper.get(split[1])
+        day = split[0][:len(split[0]) - 2]
+        return year + '-' + month.zfill(2) + '-' + day.zfill(2)
 ```
 
 ### **Java**
 
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```java
-
+class Solution {
+    public String reformatDate(String date) {
+        Map<String, Integer> mapper = new HashMap<>();
+        String[] months = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+        for (int i = 0; i < months.length; ++i) {
+            mapper.put(months[i], i + 1);
+        }
+        String[] split = date.split(" ");
+        int year = Integer.parseInt(split[2]);
+        int month = mapper.get(split[1]);
+        int day = Integer.parseInt(split[0].substring(0, split[0].length() -2));
+        return String.format("%d-%02d-%02d", year, month, day);
+    }
+}
 ```
 
 ### **...**

solution/1500-1599/1507.Reformat Date/README_EN.md

@@ -56,13 +56,34 @@
 ### **Python3**
 
 ```python
-
+class Solution:
+    def reformatDate(self, date: str) -> str:
+        months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
+        mapper = {v: str(k + 1) for k, v in enumerate(months)}
+        split = date.split(' ')
+        year = split[2]
+        month = mapper.get(split[1])
+        day = split[0][:len(split[0]) - 2]
+        return year + '-' + month.zfill(2) + '-' + day.zfill(2)
 ```
 
 ### **Java**
 
 ```java
-
+class Solution {
+    public String reformatDate(String date) {
+        Map<String, Integer> mapper = new HashMap<>();
+        String[] months = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+        for (int i = 0; i < months.length; ++i) {
+            mapper.put(months[i], i + 1);
+        }
+        String[] split = date.split(" ");
+        int year = Integer.parseInt(split[2]);
+        int month = mapper.get(split[1]);
+        int day = Integer.parseInt(split[0].substring(0, split[0].length() -2));
+        return String.format("%d-%02d-%02d", year, month, day);
+    }
+}
 ```
 
 ### **...**

solution/1500-1599/1507.Reformat Date/Solution.java

@@ -0,0 +1,14 @@
+class Solution {
+    public String reformatDate(String date) {
+        Map<String, Integer> mapper = new HashMap<>();
+        String[] months = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+        for (int i = 0; i < months.length; ++i) {
+            mapper.put(months[i], i + 1);
+        }
+        String[] split = date.split(" ");
+        int year = Integer.parseInt(split[2]);
+        int month = mapper.get(split[1]);
+        int day = Integer.parseInt(split[0].substring(0, split[0].length() -2));
+        return String.format("%d-%02d-%02d", year, month, day);
+    }
+}

solution/1500-1599/1507.Reformat Date/Solution.py

@@ -0,0 +1,9 @@
+class Solution:
+    def reformatDate(self, date: str) -> str:
+        months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
+        mapper = {v: str(k + 1) for k, v in enumerate(months)}
+        split = date.split(' ')
+        year = split[2]
+        month = mapper.get(split[1])
+        day = split[0][:len(split[0]) - 2]
+        return year + '-' + month.zfill(2) + '-' + day.zfill(2)