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l1 = [7,2,4,3], l2 = [5,6,4][7,8,0,7]l1 represents the number 7243. l2 represents the number 564. Adding these two numbers: 7243 + 564 = 7807. The output linked list [7,8,0,7] correctly represents 7807 (most significant digit first).l1 = [0], l2 = [0][0]l1 represents 0. l2 represents 0. Adding these: 0 + 0 = 0. The output linked list [0] correctly represents 0.l1 = [9,9,9], l2 = [1][1,0,0,0]l1 represents the number 999. l2 represents the number 1. Adding these: 999 + 1 = 1000. The output linked list [1,0,0,0] correctly represents 1000 (most significant digit first).Time Complexity
Space Complexity