function [r,c] = qwerty_coord(key)
A={'1','2','3','4','5','6','7','8','9','0';'q','w','e','r','t','y','u','i','o','p';
'a','s','d','f','g','h','j','k','l',':';'z','x','c','v','b','n','m','','?'};
for i=1:4
for j=1:10
if A{i,j}==key;
r=i;
c=j;
break;
end
end
end
end

Hi, Heather. To be honest, this was an older version that I was using to test containers.Map, and ended up submitting by mistake.

You got the smallest answer by mistake? Cool!

That would be something, wouldn't it? The mistake was copy-pasting this version, with the [1 1]s, instead of a version without them. They are not needed, as you noticed.