Step by Step solution about How to resolve the algorithm Array length step by step in the Haskell programming language

The given Haskell code defines a function that calculates the total length of a list of strings.

Here's a breakdown of the code:

Function Definition:

length :: [[Char]] -> Int

• length is the name of the function.

• It takes a single argument:

  • [[Char]]: This is a list of lists of characters, where each inner list represents a string.

• The function returns an Int, which represents the total length of all the strings combined.

Example Usage:

length ["apple", "orange"]

• In this example, the function is invoked with a list of two strings: "apple" and "orange".

Implementation Details:

The code for the length function is not provided in the snippet. However, based on the type signature, we can infer how it works:

• The function likely uses a recursive approach to calculate the length of all the strings in the list.
• It starts with the first string in the list and adds its length to the result.
• It then repeats this process for the remaining strings in the list.
• Once all strings in the list have been processed, the function returns the accumulated length as an Int.

Example Output:

> length ["apple", "orange"]
10

In this example, the total length of the two strings ("apple" and "orange") is 10 characters, so the function returns 10.

-- [[Char]] -> Int
length ["apple", "orange"]