nl_tokens: Quick sort an array .
pl_tokens: <mask> quickSort ( a , l , h , k , c ) { const s = [ ] ; let t = 0 ; s [ t ++ ] = l ; s [ t ++ ] = h ; while ( t > 0 ) { h = s [ -- t ] ; l = s [ -- t ] ; if ( h - l > k ) { const p = partition ( a , l , h , c ) ; if ( p > l ) { s [ t ++ ] = l ; s [ t ++ ] = p ; } if ( p + 1 < h ) { s [ t ++ ] = p + 1 ; s [ t ++ ] = h ; } } } }