[Iterations] Codility-BinaryGap

Author: Seogeurim

README.md

@@ -6,6 +6,12 @@
 
 ### 📖 [NOTES 바로가기](./notes)
 
+## Iterations
+
+|  #  |  ☆  | Problem                                          | Note |
+| :-: | :-: | :----------------------------------------------- | :--- |
+| 01  |     | [Codility-Lesson1 BinaryGap](./src/Iterations/BinaryGap) |      |
+
 ## DFS & BFS
 
 |  #  |  ☆  | Problem                                          | Note |

src/Iterations/BinaryGap/Main.java

@@ -0,0 +1,24 @@
+package Iterations.BinaryGap;
+
+public class Main {
+
+    public static void main(String[] args) {
+        Solution s = new Solution();
+        System.out.println(s.solution(1041));
+        System.out.println(s.solution(8));
+    }
+}
+
+class Solution {
+    public int solution(int N) {
+        char[] binArr = Integer.toBinaryString(N).toCharArray();
+        int ans = 0, start = 0;
+        for (int i = 1; i < binArr.length; i++) {
+            if (binArr[i] == '1') {
+                ans = Math.max(ans, i - start - 1);
+                start = i;
+            }
+        }
+        return ans;
+    }
+}

src/Iterations/BinaryGap/README.md

@@ -0,0 +1,3 @@
+## [Codility - Lesson 1 Iterations] BinaryGap
+
+![image](https://user-images.githubusercontent.com/22045163/101761832-f972b000-3b1f-11eb-80fd-7c05c6a919e2.png)