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| public class BitwiseANDOfNumbersRange {
public int rangeBitwiseAnd(int m, int n) {
if (m > n || m < 0) {
return -1;
}
int result = m;
for (int i = m + 1; i <= n; i++) {
result &= i;
}
return result;
}
public int rangeBitwiseAnd2(int m, int n) {
if (m > n || m < 0) {
return -1;
}
while (n > m) {
n = n & (n - 1);
}
return n & m;
}
}
|