text: Start two indexes from two corners and move toward each other
code: let i = 0 ; let j = str . length - 1 ; let str1 = str . split ( " " ) ; while ( i < j ) { if ( ! isVowel ( str1 [ i ] ) ) { i ++ ; continue ; } if ( ! isVowel ( str1 [ j ] ) ) { j -- ; continue ; }