Same chapter3 marksDifficulty: Medium
Write a Java program segment to change the case of every letter of a string s.
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3 marksDifficulty: Medium
Write a Java program segment to count the number of vowels in a given string s.
Original Khojo Papers practice question — not from a past board paper.
Answer
int c = 0; String v = "aeiouAEIOU"; for (int i = 0; i < s.length(); i++) if (v.indexOf(s.charAt(i)) >= 0) c++; System.out.println(c);
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
indexOf returns −1 when the character is not found, so a non-negative result means the character is a vowel.
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