write a code to output shows will this flatten array [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ].

Example heading with h2 size

Example heading with h3 size

Following is sample java code.

write a code to output shows will this flatten array [ 1, 2, 3, 4,  5, 6, 7, 8, 9, 10 ]
var input = [1, 2, [3, 4, [5, 6], 7, 8], 9, 10];