Search `target` in sorted ascending `nums`. Return index or `-1`. Variant **#14**.
Example 1
Input: nums = [14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56], target = 54
Output: 20
Constraints
Acceptance: 76% · Topics: binary-search, array