Question: A counter automation is a PDA with just two stack variables, A and Z, for which the string on the stack is always of the

A counter automation is a PDA with just two stack variables, A and Z, for which the string on the stack is always of the form AZ for some n>0. For some CFLs, such as {0'1'|i20}, the obvious PDA to accept the language is in fact a counter automation. Construct a counter automation to accept the following languages. a) { xe {0, 1}* N0(x)=N1(x)} b) { xe {0, 1}* N0(x)

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