RACSO
DFA
CFG
Operations:
Reg
,
CF
PDA
Reductions:
K
,
WP
,
CFG
,
NP
,
SAT
ANTLR:
lex
,
syn
Exams
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Exercise
‹
15
›
:
Uniquely-accepting PDA for
{
a
i
b
j
c
k
d
∣
i
=
j
}
∪
{
a
i
b
j
c
k
e
∣
j
=
k
}
\{ a^i b^j c^k d \mid i=j \} \cup \{a^i b^j c^k e\mid j=k \}
{
a
i
b
j
c
k
d
∣
i
=
j
}
∪
{
a
i
b
j
c
k
e
∣
j
=
k
}
Write a
uniquely-accepting
PDA (
which cannot be deterministic
) recognizing the words of the form
a
i
b
j
c
k
d
a^i b^j c^k d
a
i
b
j
c
k
d
with the same amount of
a
a
a
’s and
b
b
b
’s, and of the form
a
i
b
j
c
k
e
a^i b^j c^k e
a
i
b
j
c
k
e
with the same amount of
b
b
b
’s and
c
c
c
’s.
Authors:
Guillem Godoy /
Documentation:
// Write your PDA here...
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