RACSO
R
DFA
CFG
Operations:
Reg
,
CF
PDA
Reductions:
K
,
WP
,
CFG
,
NP
,
SAT
ANTLR:
lex
,
syn
Exams
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Exercise
‹
2
›
:
Regular description for
{
w
∈
{
a
,
b
}
∗
∣
∣
w
∣
a
a
a
>
0
∧
∣
w
∣
b
b
b
>
0
∧
∣
w
∣
a
b
a
>
0
∧
∣
w
∣
b
a
b
>
0
}
\{ w \in \{a,b\}^* \mid |w|_{aaa}>0\;\wedge\;|w|_{bbb}>0\;\wedge\;|w|_{aba}>0\;\wedge\;|w|_{bab}>0 \}
{
w
∈
{
a
,
b
}
∗
∣
∣
w
∣
aaa
>
0
∧
∣
w
∣
bbb
>
0
∧
∣
w
∣
aba
>
0
∧
∣
w
∣
bab
>
0
}
Give a regular description for the set of words over
{
a
,
b
}
\{a,b\}
{
a
,
b
}
such there is at least one occurrence of
a
a
a
aaa
aaa
and of
b
b
b
bbb
bbb
and 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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