查找符合特定要求的字符串

Question

There is a function that should return true:

func accessible(agent string) bool {
  a := strings.Split(agent, " ")
  if len(a) != 3 { return false }
  b := a[0]
  c := a[1]
  d := a[2]
  x := strings.EqualFold(b, c)
  y := b != strings.ToLower(c)
  z := strings.Index(d, b+c) == 1 && len(d) == 5
  return x && y && z
}

However I can't figure out which string input will match these requirements. Am I missing something?

PS: This is task #3 from gocode.io

Answer 1

agent must be 3 "words", 3 parts separated by spaces:

a := strings.Split(agent, " ")
if len(a) != 3 { return false }

1st and 2nd words must match case insensitive:

x := strings.EqualFold(b, c)

But not case sensitive:

y := b != strings.ToLower(c)

And 3rd word must contain the first 2 concatenated:

z := strings.Index(d, b+c) == 1 && len(d) == 5

Starting at index 1 (prepend with any character) and must contain 5 chars (5 bytes) (postpend to have 5 chars/bytes).

Example:

fmt.Println(accessible("A a _Aa__"))

Prints:

true