update

leetcode/problem/numbers-with-same-consecutive-differences.html

@@ -0,0 +1,29 @@
+<p>Return all <strong>non-negative</strong> integers of length <code>n</code> such that the absolute difference between every two consecutive digits is <code>k</code>.</p>
+
+<p>Note that <strong>every</strong> number in the answer <strong>must not</strong> have leading zeros. For example, <code>01</code> has one leading zero and is invalid.</p>
+
+<p>You may return the answer in <strong>any order</strong>.</p>
+
+<p>&nbsp;</p>
+<p><strong>Example 1:</strong></p>
+
+<pre>
+<strong>Input:</strong> n = 3, k = 7
+<strong>Output:</strong> [181,292,707,818,929]
+<strong>Explanation:</strong> Note that 070 is not a valid number, because it has leading zeroes.
+</pre>
+
+<p><strong>Example 2:</strong></p>
+
+<pre>
+<strong>Input:</strong> n = 2, k = 1
+<strong>Output:</strong> [10,12,21,23,32,34,43,45,54,56,65,67,76,78,87,89,98]
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>2 &lt;= n &lt;= 9</code></li>
+	<li><code>0 &lt;= k &lt;= 9</code></li>
+</ul>