Find Second Largest Element

2Easy

Find Second Largest Element

Given an array of integers, find the second largest distinct element. Return -1 if it doesn't exist.

Example 1:

Input: nums = [12, 35, 1, 10, 34, 1] Output: 34

Example 2:

Input: nums = [10, 5, 10] Output: 5

Example 3:

Input: nums = [7, 7, 7] Output: -1

Jnaneshwara Reddy Satti

Builder · ClearCode

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Algorithm Visualizer

O(N)

Before starting this video, please check the description to ensure you know the prerequisites. If you're comfortable with arrays and hash maps, let's go!

TEST CASE: []O(1)

clearcode.in

Execution Trace

1def second_largest(nums):

2 first = second = float('-inf')

3 for num in nums:

4 if num > first:

5 second = first

6 first = num

7 elif num > second and num != first:

8 second = num

9 return second if second != float('-inf') else -1

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