Rosetta Code

Substring

Extract substrings from a source string using start offsets and lengths.

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Sourcerosettacode/popular/substring.vibe
def substring(text: string, start_index: int, count: int) -> string
  text_chars = text.chars
  output = ""
  offset = 0

  while offset < count && start_index + offset < text.length
    output = output + text_chars.fetch(start_index + offset)
    offset = offset + 1
  end

  output
end

def run -> array<array<int | string>>
  sample = "Vibescript examples"
  rows: array<array<int | string>> = []
  rows.push(["start", "count", "value"])
  rows.push([0, 10, substring(sample, 0, 10)])
  rows.push([4, 6, substring(sample, 4, 6)])
  rows.push([11, 8, substring(sample, 11, 8)])
  rows
end

Output

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