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NAVES Guyslain
ProgAvExercices
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Master
e21223797/progavexercices:master
into
master
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EL DERSHABY Mohamed
requested to merge
e21223797/progavexercices:master
into
master
9 months ago
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version 1
57d90039
9 months ago
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src/main/java/fr/univamu/progav/td1/ExercicesBoucles.java
+
94
−
11
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package
fr.univamu.progav.td1
;
import
java.util.ArrayList
;
import
java.util.Comparator
;
import
java.util.List
;
import
java.util.stream.Collectors
;
@@ -8,24 +9,39 @@ public class ExercicesBoucles {
public
interface
Person
{
int
age
();
String
name
();
boolean
isFemale
();
Person
mother
();
Person
father
();
List
<
Person
>
children
();
}
// Exercice : compléter toutes les méthodes suivantes
public
static
boolean
hasFemale
(
List
<
Person
>
persons
)
{
for
(
Person
person
:
persons
)
{
if
(
person
.
isFemale
())
{
return
true
;
}
}
return
false
;
}
// retourne vrai si la liste contient un individu homme et mineur (moins de 18 ans)
public
static
boolean
containsMinorMale
(
List
<
Person
>
persons
)
{
for
(
Person
person
:
persons
)
{
if
(!
person
.
isFemale
()
&&
person
.
age
()
<
18
)
{
return
true
;
}
}
return
false
;
}
@@ -33,39 +49,82 @@ public class ExercicesBoucles {
// retourne un individu de la liste, femme et ayant au moins un enfant,
// null si aucun individu ne convient
public
static
Person
findMother
(
List
<
Person
>
persons
)
{
for
(
Person
person
:
persons
)
{
if
(
person
.
isFemale
()
&&
person
.
children
().
size
()
>
0
)
{
return
person
;
}
}
return
null
;
}
// retourne vrai si tous les individus de la liste sont majeurs (âge >= 18)
public
static
boolean
areAllMajor
(
List
<
Person
>
persons
)
{
return
false
;
for
(
Person
person
:
persons
)
{
if
(
person
.
age
()
<
18
)
{
return
false
;
}
}
return
true
;
}
// trouve un individu de la liste ayant un enfant, et retourne l'âge
// de cet enfant, ou -1 si aucun individu n'a d'enfant.
public
static
int
ageOfSomeChild
(
List
<
Person
>
persons
)
{
return
0
;
for
(
Person
person
:
persons
)
{
if
(
person
.
children
().
size
()
>
0
)
{
return
person
.
children
().
get
(
0
).
age
();
}
}
return
-
1
;
}
// retourne la liste de tous les hommes de la liste
public
static
List
<
Person
>
males
(
List
<
Person
>
persons
)
{
return
List
.
of
();
List
<
Person
>
males
=
new
ArrayList
<>();
for
(
Person
person
:
persons
)
{
if
(!
person
.
isFemale
())
{
males
.
add
(
person
);
}
}
return
males
;
}
// retourne le nombre de femmes de la liste
public
static
int
nbFemales
(
List
<
Person
>
persons
)
{
return
0
;
int
count
=
0
;
// Compteur de femmes
for
(
Person
person
:
persons
)
{
if
(
person
.
isFemale
())
{
count
++;
}
}
return
count
;
}
// retourne la personne la plus agée de la liste,
// null si la liste est vide
public
static
Person
eldest
(
List
<
Person
>
persons
)
{
return
null
;
if
(
persons
.
isEmpty
())
{
return
null
;
}
Person
eldestPerson
=
persons
.
get
(
0
);
for
(
Person
person
:
persons
)
{
if
(
person
.
age
()
>
eldestPerson
.
age
())
{
eldestPerson
=
person
;
// Mettre à jour la personne la plus âgée
}
}
return
eldestPerson
;
}
@@ -73,19 +132,43 @@ public class ExercicesBoucles {
// personnes de la liste, dans l'ordre, séparés par une espace.
public
static
String
names
(
List
<
Person
>
persons
)
{
StringBuilder
builder
=
new
StringBuilder
();
builder
.
append
(
"Ceci est ajouté"
);
builder
.
append
(
" en fin de chaîne."
);
return
builder
.
toString
();
// -> "Ceci est ajouté en fin de chaîne."
for
(
Person
person
:
persons
)
{
builder
.
append
(
person
.
name
()).
append
(
" "
);
}
String
result
=
builder
.
toString
().
trim
();
// Supprime l'espace supplémentaire à la fin
return
result
;
}
// retourne vrai si les nombres d'hommes et de femmes sont égaux.
public
static
boolean
hasAsManyMalesAsFemales
(
List
<
Person
>
persons
)
{
return
false
;
int
maleCount
=
0
;
int
femaleCount
=
0
;
for
(
Person
person
:
persons
)
{
if
(
person
.
isFemale
())
{
femaleCount
++;
}
else
{
maleCount
++;
}
}
return
maleCount
==
femaleCount
;
}
// retourne l'âge moyen des individus de la liste (0 si la liste est vide)
public
static
double
averageAge
(
List
<
Person
>
persons
)
{
return
0
;
if
(
persons
.
isEmpty
())
{
return
0
;
}
double
totalAge
=
0
;
for
(
Person
person
:
persons
)
{
totalAge
+=
person
.
age
();
}
return
totalAge
/
persons
.
size
();
}
}
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