Split string into Array of Arrays [closed]

Answer 1

You can use String method enumerateSubstrings in range using byWords options, check if the string is an integer, if so append a new array with that string to the result otherwise append the word to the last result array:

let string = "001|apple|red|002|banana|yellow|003|grapes|purple"
var result: [[Substring]] = []
string.enumerateSubstrings(in: string.startIndex..., options: .byWords) { _, range, _, _ in
    let word = string[range]
    if let _ = Int(word) {
        result.append([word])
        // or just a new empty array
        // result.append([])
    } else {
        result[result.index(before: result.endIndex)].append(word)
    }
}

print(result)   // "[["001", "apple", "red"], ["002", "banana", "yellow"], ["003", "grapes", "purple"]]\n"