Search `target` in sorted ascending `nums`. Return index or `-1`. Variant **#18**.
Example 1
Input: nums = [18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68], target = 22
Output: 2
Constraints
Acceptance: 63% · Topics: binary-search, array