Solution (leetcode-in-java 1.22 API)

java.lang.Object
- g0001_0100.s0077_combinations.Solution

```
public class Solution
extends Object
```
77 - Combinations.
Medium

Given two integers n and k, return all possible combinations of k numbers out of the range [1, n].

You may return the answer in any order.

Example 1:

Input: n = 4, k = 2

Output: [ [2,4], [3,4], [2,3], [1,2], [1,3], [1,4], ]

Example 2:

Input: n = 1, k = 1

Output: 1

Constraints:
- 1 <= n <= 20
- 1 <= k <= n

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Solution()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  List<List<Integer>> combine(int n, int k)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- Solution
```
public Solution()
```

Method Detail

combine

public List<List<Integer>> combine(int n,
                                   int k)