RACSO
DFA
CFG
Operations:
Reg
,
CF
PDA
Reductions:
K
,
WP
,
CFG
,
NP
,
SAT
ANTLR:
lexical
,
syntactic
Exams
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Exercise
‹
4
›
:
Regular description for
{
w
∈
{
a
,
b
}
∗
∣
∣
w
∣
a
b
a
=
∣
w
∣
b
a
b
=
1
}
\{ w \in \{a,b\}^* \mid |w|_{aba}=|w|_{bab}=1 \}
{
w
∈
{
a
,
b
}
∗
∣
∣
w
∣
aba
=
∣
w
∣
bab
=
1
}
Give a regular description for the set of words over
{
a
,
b
}
\{a,b\}
{
a
,
b
}
such there is exactly one occurrence of
a
b
a
aba
aba
and of
b
a
b
bab
bab
.
Authors:
Guillem Godoy /
Documentation:
main { // Write here your regular description... }
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