feat: 'Short Long Short'

Add 'Short Long Short' kata

kata/8 kyu/short-long-short/index.test.ts

@@ -0,0 +1,12 @@
+import solution from '.';
+
+describe('solution', () => {
+  it('should join strings based on their length', () => {
+    expect.assertions(4);
+
+    expect(solution('45', '1')).toStrictEqual('1451');
+    expect(solution('13', '200')).toStrictEqual('1320013');
+    expect(solution('Soon', 'Me')).toStrictEqual('MeSoonMe');
+    expect(solution('U', 'False')).toStrictEqual('UFalseU');
+  });
+});

kata/8 kyu/short-long-short/index.ts

@@ -0,0 +1,5 @@
+function solution(a: string, b: string): string {
+  return a.length < b.length ? a + b + a : b + a + b;
+}
+
+export default solution;

kata/8 kyu/short-long-short/readme.md

@@ -0,0 +1,52 @@
+# [Short Long Short](https://www.codewars.com/kata/50654ddff44f800200000007)
+
+Given 2 strings, `a` and `b`, return a string of the form short+long+short, with the shorter string on the outside
+and the longer string on the inside. The strings will not be the same length, but they may be empty ( length `0` ).
+
+For example:
+
+```javascript
+solution('1', '22'); // returns "1221"
+solution('22', '1'); // returns "1221"
+```
+
+```typescript
+solution('1', '22'); // returns "1221"
+solution('22', '1'); // returns "1221"
+```
+
+```coffeescript
+solution("1", "22") # returns "1221"
+solution("22", "1") # returns "1221"
+```
+
+```ruby
+solution("1", "22") # returns "1221"
+solution("22", "1") # returns "1221"
+```
+
+```elixir
+solution("1", "22") # returns "1221"
+solution("22", "1") # returns "1221"
+```
+
+```csharp
+ShortLongShort.Solution("1", "22"); // returns "1221"
+ShortLongShort.Solution("22", "1"); // returns "1221"
+```
+
+```python
+solution("1", "22") # returns "1221"
+solution("22", "1") # returns "1221"
+```
+
+```php
+shortLongShort("1", "22") // returns "1221"
+shortLongShort("22", "1") // returns "1221"
+```
+
+---
+
+## Tags
+
+- Algorithms