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public class stringThree {

// Given a string, count the number of words ending in 'y' or 'z' -- so the 'y' in "heavy" and the 'z' in "fez" count, but not the 'y' in "yellow" (not case sensitive). We'll say that a y or z is at the end of a word if there is not an alphabetic letter immediately following it. (Note: Character.isLetter(char) tests if a char is an alphabetic letter.)

// countYZ("fez day") → 2

// countYZ("day fez") → 2

// countYZ("day fyyyz") → 2

public int countYZ(String str) {

int count = 0;

for(int i = 0; i < str.length(); i++){

}

return count;

}

}