you give stre num consist digit onlyreturn large palindromic integer form string form digit take num it contain lead zeroesnotesyou need use digit num use digitthe digit reorder Example 1input num 444947137output 7449447explanation Use digit 4449477 444947137 form palindromic integer 7449447it show 7449447 large palindromic integer formedExample 2input num 00009output 9explanation it show 9 large palindromic integer formednote integer return contain lead zero Constraints1 numlength 105num consist digit