How to resolve the algorithm Flatten a list step by step in the E programming language

Published on 12 May 2024 09:40 PM
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How to resolve the algorithm Flatten a list step by step in the E programming language

Table of Contents

Problem Statement

Write a function to flatten the nesting in an arbitrary list of values. Your program should work on the equivalent of this list: Where the correct result would be the list:

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Flatten a list step by step in the E programming language

Source code in the e programming language

def flatten(nested) {
    def flat := [].diverge()
    def recur(x) {
        switch (x) {
            match list :List { for elem in list { recur(elem) } }
            match other      { flat.push(other) }
        }
    }
    recur(nested)
    return flat.snapshot()
}

? flatten([[1], 2, [[3,4], 5], [[[]]], [[[6]]], 7, 8, []])
# value: [1, 2, 3, 4, 5, 6, 7, 8]

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