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Binary Search

Find Peak Element

**Problem Statement:** Given the required input arguments, write an efficient algorithm to solve the **Find Peak Element** problem. Implement the required logic as specified by standard definitions for this classic algorithmic challenge. **Hint / Expected Approach:** Binary search: move toward larger neighbor **Edge Cases to Consider:** - (1) Single element - (2) Strictly increasing (last element) - (3) Multiple peaks

Examples

Example 1
Input: [1,2,3,1]
Output: 2
Explanation: Peak at index 2
Example 2
Input: [1,2,1,3,5,6,4]
Output: 1 or 5
Explanation: Two peaks
Example 3
Input: [1]
Output: 0
Explanation: Single element

Constraints

  • ▪Input arguments are within valid ranges
  • ▪Optimize for execution speed
  • ▪Handle null/empty inputs gracefully

Watch Out For Edge Cases

  • ▪Single element
  • ▪Strictly increasing (last element)
  • ▪Multiple peaks
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