Most Frequently Called Function From Logs
Examples
Example 1:
Input: logs = ["> main", "> a", "> b", "< b", "> b", "< b", "< a", "> a", "< a", "< main"]
Output: "a"
Explanation:
Example 2:
Input: logs = ["> main", "< main", "> a", "< a", "> a", "< a"]
Output: "a"
Explanation:
Example 3:
Input: logs = ["> a", "< a", "> b", "< b"]
Output: "a"
Explanation: