docs: update README.md

Author: relish-wang

README.md

@@ -14,8 +14,8 @@
 |         题目         | 题解                                   | kotlin           | JavaScript |     Java      |
 | :-----------------: | -------------------------------------- | :--------------: | :-------: | :------------: |
 | [1][1-question]     | [Two Sum][1-tips]                      | [✅][1-kotlin]   |           | [✅][1-java]   |
-| [771][771-question] | [Jewels and Stones][771-tips]          | [✅][771-kotlin] |           | [✅][771-java] |
 | [728][728-question] | [Self Dividing Numbers][728-tips]      |                  |           | [✅][728-java] |
+| [771][771-question] | [Jewels and Stones][771-tips]          | [✅][771-kotlin] |           | [✅][771-java] |
 | [804][804-question] | [Unique Morse Code Words][804-tips]    |                  |           | [✅][804-java] |
 
 
@@ -36,22 +36,22 @@
 
 [1-question]: https://leetcode.com/problems/two-sum/description/
 [2-question]: https://leetcode.com/problems/add-two-numbers/description/
+[728-question]: https://leetcode.com/problems/self-dividing-numbers/description/
 [771-question]: https://leetcode.com/problems/jewels-and-stones/description/
 [804-question]: https://leetcode.com/problems/unique-morse-code-words/description/
-[728-question]: https://leetcode.com/problems/self-dividing-numbers/description/
 
 [1-tips]: ./tips/1/README.md
 [2-tips]: ./tips/2/README.md
+[728-tips]: ./tips/728/README.md
 [771-tips]: ./tips/771/README.md
 [804-tips]: ./tips/804/README.md
-[728-tips]: ./tips/728/README.md
 
 [1-kotlin]: ./src/_1/kotlin/Solution.kt
 [2-kotlin]: ./src/_2/kotlin/Solution.kt
 [771-kotlin]: ./src/_771/kotlin/Solution.kt
 
 [1-java]: ./src/_1/Solution.java
 [2-java]: ./src/_2/Solution.java
+[728-java]: ./src/_728/Solution.java
 [771-java]: ./src/_771/Solution.java
 [804-java]: ./src/_804/Solution.java
-[728-java]: ./src/_728/Solution.java

src/_514/MainClass.java

@@ -0,0 +1,12 @@
+package _514;
+
+class Solution {
+
+    public int findRotateSteps(String ring, String key) {
+        return 0;
+    }
+
+    public static void main(String[] args) {
+        System.out.println(new Solution().findRotateSteps("godding", "gd"));
+    }
+}

src/_729/MyCalendar.java

@@ -0,0 +1,41 @@
+package _729;
+// remove the line of `package xxx.xxx.xxx.xxx;` when you commit it
+
+import java.util.TreeMap;
+
+/**
+ * @author relish
+ * @since 2018/04/02
+ */
+
+class MyCalendar {
+
+    public MyCalendar() {
+
+    }
+
+    private TreeMap<Integer, Integer> map = new TreeMap<>();
+
+    public boolean book(int start, int end) {
+        TreeMap<Integer, Integer> d = new TreeMap<>(map);
+        d.put(start, d.getOrDefault(start, 0) + 1);
+        d.put(end, d.getOrDefault(end, 0) - 1);
+        int sum = 0;
+        for (Integer integer : d.values()) {
+            sum += integer;
+            if (sum > 1) {
+                return false;
+            }
+        }
+        map = new TreeMap<>(d);
+        return true;
+    }
+
+    public static void main(String[] args) {
+        MyCalendar myCalendar = new MyCalendar();
+        System.out.println(myCalendar.book(10, 20)); // returns true
+        System.out.println(myCalendar.book(15, 25)); // returns false
+        System.out.println(myCalendar.book(20, 30)); // returns true
+    }
+}
+

src/_732/MyCalendarThree.java

@@ -0,0 +1,36 @@
+package _732;
+
+import java.util.TreeMap;
+
+class MyCalendarThree {
+
+
+    public MyCalendarThree() {
+    }
+
+    TreeMap<Integer, Integer> timeline = new TreeMap<>();
+
+    public int book(int start, int end) {
+        timeline.put(start, timeline.getOrDefault(start, 0) + 1);
+        timeline.put(end, timeline.getOrDefault(end, 0) - 1);
+        int sum = 0;
+        int max = 0;
+        for (Integer integer : timeline.values()) {
+            sum += integer;
+            max = Math.max(max, sum);
+        }
+        return max;
+    }
+}
+
+class Main {
+    public static void main(String[] args) {
+        MyCalendarThree myCalendarThree = new MyCalendarThree();
+        System.out.println(myCalendarThree.book(10, 20));//1
+        System.out.println(myCalendarThree.book(50, 60));//1
+        System.out.println(myCalendarThree.book(10, 40));//2
+        System.out.println(myCalendarThree.book(5, 15));//3
+        System.out.println(myCalendarThree.book(5, 10));//3
+        System.out.println(myCalendarThree.book(25, 55));//3
+    }
+}