Package g0001_0100.s0060_permutation_sequence

Class Solution

java.lang.Object

g0001_0100.s0060_permutation_sequence.Solution

public class Solution
extends Object

60 - Permutation Sequence.<p>Hard</p> <p>The set <code>[1, 2, 3, ..., n]</code> contains a total of <code>n!</code> unique permutations.</p> <p>By listing and labeling all of the permutations in order, we get the following sequence for <code>n = 3</code>:</p> <ol> <li><code>&quot;123&quot;</code></li> <li><code>&quot;132&quot;</code></li> <li><code>&quot;213&quot;</code></li> <li><code>&quot;231&quot;</code></li> <li><code>&quot;312&quot;</code></li> <li><code>&quot;321&quot;</code></li> </ol> <p>Given <code>n</code> and <code>k</code>, return the <code>kth</code> permutation sequence.</p> <p><strong>Example 1:</strong></p> <p><strong>Input:</strong> n = 3, k = 3</p> <p><strong>Output:</strong> &ldquo;213&rdquo;</p> <p><strong>Example 2:</strong></p> <p><strong>Input:</strong> n = 4, k = 9</p> <p><strong>Output:</strong> &ldquo;2314&rdquo;</p> <p><strong>Example 3:</strong></p> <p><strong>Input:</strong> n = 3, k = 1</p> <p><strong>Output:</strong> &ldquo;123&rdquo;</p> <p><strong>Constraints:</strong></p> <ul> <li><code>1 <= n <= 9</code></li> <li><code>1 <= k <= n!</code></li> </ul>

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
String	getPermutation(int n, int k)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

getPermutation

public String getPermutation(int n,
 int k)