text: /*
   * @lc app=leetcode id=248 lang=cpp
   *
   * [248] Strobogrammatic Number III
   */
  
  // @lc code=start
  #include <vector>
  #include <string>
  using namespace std;
  
  class Solution {
  public:
      bool cmp(string a, string b)
      // return true if a <= b
      {
          if (a.size() < b.size())return true;
          if (a.size() > b.size())return false;
          int n = a.size();
          for (int i = 0;i < n; i++)
              if (a[i] != b[i])
                  return a[i] < b[i];
          return true;
      }
  
      int strobogrammaticInRange(string low, string high) {
          int lower = low.size(), upper = high.size();
          
      }
  };
  // @lc code=end
  
  