the arrayform integer num array represent digit leave right orderfor example num 1321 array form 1321given num arrayform integer integer k return arrayform integer num k Example 1input num 1200 k 34output 1234explanation 1200 34 1234example 2input num 274 k 181Output 455Explanation 274 181 455example 3input num 215 k 806output 1021explanation 215 806 1021 Constraints1 numlength 1040 numi 9num contain lead zeros zero itself1 k 104