diff --git a/src/dragon-curve/index.js b/src/dragon-curve/index.js
index e652f2e..4ad9eef 100644
--- a/src/dragon-curve/index.js
+++ b/src/dragon-curve/index.js
@@ -1,3 +1,17 @@
 export const dragonCurve = n => {
-  // logic...
+  const reverseString = string => {     
+    return string.split('')
+      .map(element => {
+        return element === '1' ? '0' : '1';
+      })  
+      .reverse()
+      .join('');
+  }; 
+  let dragonLine = '1';
+  n -= 1;
+  while (n > 0){
+    dragonLine += '1' + reverseString(dragonLine);
+    n -= 1;
+  }
+  return dragonLine;
 };
diff --git a/src/rotate-matrix/index.js b/src/rotate-matrix/index.js
index d1ef07d..0025200 100644
--- a/src/rotate-matrix/index.js
+++ b/src/rotate-matrix/index.js
@@ -1,4 +1,7 @@
 export const rotateMatrix = arr => {
-  // logic...
+  return arr[0]
+    .map( (el, idx) => {
+      return arr.map(el => el[idx]);
+    });
 };