Why we put the 2D arrays size s1.length()+1 & s2.length()+2

#1

int[][] strg = new int[s1.length() + 1][s2.length() + 2];
why we put the 2D array size in strg[][] as given above

s1.length()+1
&
s2.length()+2
please the solution as soon as possible

#2

@sagarbehal,
we are starting from s1.length(), s2.length() that’s why we add 1 to the size. +2 might have been a mistake because we are not actually using that.

#3

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