Just solved in Go.

My solutions was assuming the array of indices was sorted based on the examples and it woked for all the solutions.
I was also asuming the array contains no negative indices.
But, reading the description, the assumptions were just not correct.

About the first assumption, I suggest to either ...

• include the assumption that the indices are sorted in the description
• or add test cases where there are indices greater than the input string lenght before some actually valid indices.

About the second assumption, I suggest to either ...

• include the assumption that the indices are always positive
• or add test cases where there are negative indices. And even better if they are placed before some actually valid indices.

Failed random tests in Haskell do not show actual input string:

Falsifiable (after 1 test):
  ""
expected: 2
 but got: 0

I've made a fork that fixes this.

Haskell fork

• adds tests for no/all vowel strings

Rust translation

pytohn new test frameworks

python new test frameworks

python new test frameworks

python new test frameworks

Scala translation

python new test framework

python new test framework