[update] 984

Author: Dream

README.md

@@ -25,7 +25,7 @@
 |987|[Vertical Order Traversal of a Binary Tree](https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree/) | |Medium|
 |986|[Interval List Intersections](https://leetcode.com/problems/interval-list-intersections/) | |Medium|
 |985|[Sum of Even Numbers After Queries](https://leetcode.com/problems/sum-of-even-numbers-after-queries/) | |Easy|
-|984|[String Without AAA or BBB](https://leetcode.com/problems/string-without-aaa-or-bbb/) | |Easy|
+|984|[String Without AAA or BBB](https://leetcode.com/problems/string-without-aaa-or-bbb/) | [java_dream](./algorithms/stringWithoutAaaOrBbb/StringWithoutAaaOrBbb.java) |Easy|
 |983|[Minimum Cost For Tickets](https://leetcode.com/problems/minimum-cost-for-tickets/) | |Medium|
 |982|[Triples with Bitwise AND Equal To Zero](https://leetcode.com/problems/triples-with-bitwise-and-equal-to-zero/) | |Hard|
 |981|[Time Based Key-Value Store](https://leetcode.com/problems/time-based-key-value-store/) | |Medium|

algorithms/stringWithoutAaaOrBbb/StringWithoutAaaOrBbb.java

@@ -0,0 +1,43 @@
+/**
+ * @author Dream
+ */
+public class StringWithoutAaaOrBbb {
+    public String strWithout3a3b(int a, int b) {
+        StringBuffer buffer = new StringBuffer();
+        int subtract = Math.abs(a - b);
+        if (subtract >= 3) {
+            if (a > b) {
+                while (a > 1 && b > 0) {
+                    buffer.append("aab");
+                    a -= 2;
+                    b--;
+                }
+            }else {
+                while (a > 0 && b > 1) {
+                    buffer.append("bba");
+                    b -= 2;
+                    a--;
+                }
+            }
+        }
+        while (a > 0 && b > 0) {
+            if (a >= b) {
+                buffer.append("ab");
+            }
+            if (b > a) {
+                buffer.append("ba");
+            }
+            a--;
+            b--;
+        }
+        while (a > 0) {
+            buffer.append("a");
+            a--;
+        }
+        while (b > 0) {
+            buffer.append("b");
+            b--;
+        }
+        return buffer.toString();
+    }
+}