When I submitted my code (version1), it got the time exceed error.

```
int lowIndex = 0;
int highIndex = numbers.length - 1;
while(numbers[lowIndex] + numbers[highIndex] != target) {
if(numbers[lowIndex] + numbers[highIndex] > target) {
highIndex--;
}
else {
lowIndex++;
}
}
return new int[]{lowIndex + 1, highIndex + 1};
```

However, when I changed the variable names into r,h, it is get accepted. (below version2)

```
int l = 0;
int h = numbers.length - 1;
while(numbers[l] + numbers[h] != target) {
if(numbers[l] + numbers[h] > target) {
h--;
}
else {
l++;
}
}
return new int[]{l + 1, h + 1};
```

Is this the bug on the LC?

Regards,

Tianbing