add 1576

fishercoder1534 · fishercoder1534 · commit 06b5ac652e86 · 2020-09-06T07:27:14.000-07:00
diff --git a/README.md b/README.md
@@ -8,6 +8,7 @@ _If you like this project, please leave me a star._ &#9733;
 
 |  #  |      Title     |   Solutions   | Video  | Difficulty  | Tag                   
 |-----|----------------|---------------|--------|-------------|-------------
+|1576|[Replace All ?'s to Avoid Consecutive Repeating Characters](https://leetcode.com/problems/replace-all-s-to-avoid-consecutive-repeating-characters/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1576.java) ||String|Easy|
 |1574|[Shortest Subarray to be Removed to Make Array Sorted](https://leetcode.com/problems/shortest-subarray-to-be-removed-to-make-array-sorted/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1574.java) ||Array, Binary Search|Medium|
 |1572|[Matrix Diagonal Sum](https://leetcode.com/problems/matrix-diagonal-sum/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1572.java) ||Array|Easy|
 |1567|[Maximum Length of Subarray With Positive Product](https://leetcode.com/problems/maximum-length-of-subarray-with-positive-product/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1567.java) |[:tv:](https://youtu.be/bFer5PdsgpY)|Greedy|Medium|
diff --git a/src/main/java/com/fishercoder/solutions/_1576.java b/src/main/java/com/fishercoder/solutions/_1576.java
@@ -0,0 +1,36 @@
+package com.fishercoder.solutions;
+
+public class _1576 {
+    public static class Solution1 {
+        public String modifyString(String s) {
+            StringBuilder sb = new StringBuilder();
+            for (int i = 0; i < s.length(); i++) {
+                char c = s.charAt(i);
+                if (c == '?') {
+                    char replacement = findReplacement(sb, i, s);
+                    sb.append(replacement);
+                } else {
+                    sb.append(c);
+                }
+            }
+            return sb.toString();
+        }
+
+        private char findReplacement(StringBuilder sb, int index, String s) {
+            char replacement = 'a';
+            if (index > 0) {
+                int count = 1;
+                while (replacement == sb.charAt(index - 1)) {
+                    replacement += count % 26;
+                }
+            }
+            if (index + 1 < s.length()) {
+                int count = 1;
+                while (replacement == s.charAt(index + 1) || (index > 0 && replacement == sb.charAt(index - 1))) {
+                    replacement += count % 26;
+                }
+            }
+            return replacement;
+        }
+    }
+}
diff --git a/src/test/java/com/fishercoder/_1576Test.java b/src/test/java/com/fishercoder/_1576Test.java
@@ -0,0 +1,21 @@
+package com.fishercoder;
+
+import com.fishercoder.solutions._1576;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class _1576Test {
+    private static _1576.Solution1 solution1;
+
+    @BeforeClass
+    public static void setup() {
+        solution1 = new _1576.Solution1();
+    }
+
+    @Test
+    public void test1() {
+        assertEquals("azs", solution1.modifyString("?zs"));
+    }
+}
