Traverse the string , S and push all the vowels to string vow
for i in range ( n ) : NEW_LINE INDENT if ( S [ i ] == ' a ' or S [ i ] == ' e ' or S [ i ] == ' i ' or S [ i ] == ' o ' or S [ i ] == ' u ' ) : NEW_LINE INDENT vow += S [ i ] ; NEW_LINE DEDENT DEDENT