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lang-cs
fromToandresultbe if the row were[0,1,0,1]and why?[-1,0,-1,0]forfromTo. The -1 are default values which are not touched when there is no block at that initial position. The two zeroes indicate that the blocks at positions 1 and 3 will both go to position 0 (where they will merge).resultwill reflect this merge in the first position:[2,0,0,0]. The other zeroes are default values indicating that that position will be empty.