Peak

Python find peaks in 2d array

Python find peaks in 2d array
  1. How do you find the peak of a 2d array?
  2. How do you find a value in a 2d array Python?
  3. What is peak finding?

How do you find the peak of a 2d array?

An element is a peak element if it is greater than or equal to its four neighbors, left, right, top and bottom. For example neighbors for A[i][j] are A[i-1][j], A[i+1][j], A[i][j-1] and A[i][j+1]. For corner elements, missing neighbors are considered of negative infinite value.

How do you find a value in a 2d array Python?

In Python, we can access elements of a two-dimensional array using two indices. The first index refers to the indexing of the list and the second index refers to the position of the elements. If we define only one index with an array name, it returns all the elements of 2-dimensional stored in the array.

What is peak finding?

If you are equal and greater than the elements on left and right side than you are the peak. In case of the edges, you only have to look at only one side. For example, position 9 is a peak if i >= h. So the problem we solve right now is represented as “Find a peak if exists”.

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