Question: Give pushdown automata for the languages a) {w | w contains at least three 0s} b) {w | the length of w is even} c)

Give pushdown automata for the languages

a) {w | w contains at least three 0s}

b) {w | the length of w is even}

c) {w | w starts and ends with the same symbol}

d) {w | the length of w is odd and its middle symbol is a 1}

e) {w | w = w R , that is, w is a palindrome}

f) The empty set

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