Java > String-3 > gHappy (CodingBat Solution)

Problem:

We'll say that a lowercase 'g' in a string is "happy" if there is another 'g' immediately to its left or right. Return true if all the g's in the given string are happy.

gHappy("xxggxx") → true
gHappy("xxgxx") → false
gHappy("xxggyygxx") → false

Solution:

public boolean gHappy(String str) {
  int len = str.length();
  boolean happy = true;

  for (int i = 0; i < len; i++) {
    if (str.charAt(i) == 'g') {
      if (i > 0 && str.charAt(i-1) == 'g')
        happy = true;
      else if (i < len-1 && str.charAt(i+1) == 'g')
        happy = true;
      else
        happy = false;
    }
  }
  return happy;
}