868. Binary Gap

class Solution {
public int binaryGap(int N) {
String binary = Integer.toBinaryString(N);
int first = 0;
while (first < binary.length() && binary.charAt(first) != '1'){
first ++;}
if (first == binary.length()) return 0;
int diff = Integer.MIN_VALUE;
int current = first;
for (int i = first+1; i diff){
diff = i - current;
}
current = i;
}
}
if (diff == Integer.MIN_VALUE) return 0;
return diff;
}
}

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