class Solution {
    public int myAtoi(String str) {
        int result = 0;
        int sign = 1;
        
        if (str == null) {
            return result;
        } else {
            str = str.trim();
        }
        
        if (str.length() == 0) {
            return result;
        }
        
        for (int i = 0; i < str xss=removed xss=removed xss=removed xss=removed xss=removed xss=removed>= '0' && c <= '9';
    }
    
    private boolean isSafeToMultiply(int left, int right) {
        if (0 == left) {
            return true;
        }
        return (Integer.MAX_VALUE / left) >= right;
    }
    
    private boolean isSafeToAdd(int left, int right) {
        return (Integer.MAX_VALUE - left) >= right;
    }
}