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Z3 Clarifications

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Clarifications on Z3

Q 24. In how many different ways can the letters of the word 'CORPORATION' be arranged so that the vowels always come together?

How do we get a subset of a string value without using loop

Ans:
word = "CORPORATION";
vowels ="AEIOU";
vowelsarray=vowels.split("");
wordletterswithoutvowels=word.split("").filter((x)=>!x.isin(vowelsarray)); 
OR
IsNotAVowel:=!x.isin(vowelsarray);
word.split("").filter(IsNotAVowel);
OR
IsNotAVowel:=!x.isin("AEIOU".split(""));
word.split("").filter(IsNotAVowel);
Result => CRPRTN