Blankj
diff --git a/‎README.md
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diff --git a/‎note/012/README.md
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1 +package com.blankj.medium._012;
2 +
3 +/**
4 + * <pre>
5 + * author: Blankj
6 + * blog : http://blankj.com
7 + * time : 2018/01/25
8 + * desc :
9 + * </pre>
10 + */
11 +public class Solution {
12 + public String intToRoman(int num) {
13 + String M[] = {"", "M", "MM", "MMM"};
14 + String C[] = {"", "C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM"};
15 + String X[] = {"", "X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC"};
16 + String I[] = {"", "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"};
17 + return M[num / 1000] + C[(num % 1000) / 100] + X[(num % 100) / 10] + I[num % 10];
18 + }
19 +
20 + public static void main(String[] args) {
21 + Solution solution = new Solution();
22 + System.out.println(solution.intToRoman(621));// DCXXI
23 + System.out.println(solution.intToRoman(348));// CCCXLVIII
24 + }
25 +} b/‎note/012/README.md
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1 +package com.blankj.medium._012;
2 +
3 +/**
4 + * <pre>
5 + * author: Blankj
6 + * blog : http://blankj.com
7 + * time : 2018/01/25
8 + * desc :
9 + * </pre>
10 + */
11 +public class Solution {
12 + public String intToRoman(int num) {
13 + String M[] = {"", "M", "MM", "MMM"};
14 + String C[] = {"", "C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM"};
15 + String X[] = {"", "X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC"};
16 + String I[] = {"", "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"};
17 + return M[num / 1000] + C[(num % 1000) / 100] + X[(num % 100) / 10] + I[num % 10];
18 + }
19 +
20 + public static void main(String[] args) {
21 + Solution solution = new Solution();
22 + System.out.println(solution.intToRoman(621));// DCXXI
23 + System.out.println(solution.intToRoman(348));// CCCXLVIII
24 + }
25 +}
@@ -73,6 +73,7 @@
 | 6    | [ZigZag Conversion][006]                 | String                           |
 | 8    | [String to Integer (atoi)][008]          | Math, String                     |
 | 11   | [Container With Most Water][011]         | Array, Two Pointers              |
+| 12   | [Integer to Roman][012]                  | Math, String                     |
 | 15   | [3Sum][015]                              | Array, Two Pointers              |
 | 17   | [Letter Combinations of a Phone Number][017] | String, Backtracking             |
 | 19   | [Remove Nth Node From End of List][019]  | Linked List, Two Pointers        |
@@ -143,6 +144,7 @@
 [006]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/006/README.md
 [008]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/008/README.md
 [011]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/011/README.md
+[012]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/012/README.md
 [015]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/015/README.md
 [017]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/017/README.md
 [019]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/019/README.md
 
@@ -0,0 +1,25 @@
+package com.blankj.medium._012;
+
+/**
+ * <pre>
+ *     author: Blankj
+ *     blog  : http://blankj.com
+ *     time  : 2018/01/25
+ *     desc  :
+ * </pre>
+ */
+public class Solution {
+    public String intToRoman(int num) {
+        String M[] = {"", "M", "MM", "MMM"};
+        String C[] = {"", "C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM"};
+        String X[] = {"", "X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC"};
+        String I[] = {"", "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"};
+        return M[num / 1000] + C[(num % 1000) / 100] + X[(num % 100) / 10] + I[num % 10];
+    }
+
+    public static void main(String[] args) {
+        Solution solution = new Solution();
+        System.out.println(solution.intToRoman(621));// DCXXI
+        System.out.println(solution.intToRoman(348));// CCCXLVIII
+    }
+}