From 550d435a2008fc0eef83cb0d30fdb53c32de264f Mon Sep 17 00:00:00 2001
From: Romain Vuillemot <romain.vuillemot@gmail.com>
Date: Thu, 8 Apr 2021 13:09:35 +0200
Subject: [PATCH] maj code exos
---
TD01/code/arbre-parcours-profondeur.py | 80 ++++++++++++++++++++
TD01/code/bfs-tree.py | 1 +
TD01/code/bfs.py | 1 +
TD01/code/comprehension-list-filter.py | 1 +
TD01/code/fibo-comp.py | 14 ----
TD01/code/fibo-mem.py | 13 +---
TD01/code/fibo-rec.py | 11 +++
TD01/code/graph-check-color.py | 38 ++++++++++
TD01/code/graph-labyrinthe.py | 36 +++++++++
TD01/code/{graphe_dico.py => graphe-dico.py} | 0
TD01/code/graphe-liens.py | 23 ++++++
TD01/code/graphe-matrice.py | 12 +++
TD01/code/listes-fusion.py | 26 +++++++
TD01/code/recherche-dico.py | 3 +-
TD01/code/tri-stabilite.py | 4 +-
15 files changed, 237 insertions(+), 26 deletions(-)
create mode 100644 TD01/code/arbre-parcours-profondeur.py
delete mode 100644 TD01/code/fibo-comp.py
create mode 100644 TD01/code/fibo-rec.py
create mode 100644 TD01/code/graph-check-color.py
create mode 100644 TD01/code/graph-labyrinthe.py
rename TD01/code/{graphe_dico.py => graphe-dico.py} (100%)
create mode 100644 TD01/code/graphe-liens.py
create mode 100644 TD01/code/graphe-matrice.py
create mode 100644 TD01/code/listes-fusion.py
diff --git a/TD01/code/arbre-parcours-profondeur.py b/TD01/code/arbre-parcours-profondeur.py
new file mode 100644
index 0000000..32204ba
--- /dev/null
+++ b/TD01/code/arbre-parcours-profondeur.py
@@ -0,0 +1,80 @@
+class Noeud:
+ def __init__(self, v, c = []):
+ self.v = v
+ self.c = c
+
+def parcour_largeur(n):
+
+ stack = []
+ stack.append(n)
+
+ while len(stack) > 0:
+ current = stack.pop(0)
+
+ for s in current.c:
+ stack.append(s)
+
+ print(current.v)
+
+def parcour_largeur(n):
+
+ stack = []
+ stack.append(n)
+
+ while len(stack) > 0:
+ current = stack.pop(0)
+
+ for s in current.c:
+ stack.append(s)
+
+ print(current.v)
+
+def parcour_profondeur(n):
+
+ stack = []
+ stack.append(n)
+
+ while len(stack) > 0:
+ current = stack.pop()
+
+ for s in reversed(current.c):
+ stack.append(s)
+
+ print(current.v)
+
+def parcour_profondeur_rec(n):
+
+ if len(n.c) > 0:
+ parcour_profondeur_rec(n.c[0])
+
+ print(n.v)
+
+ if len(n.c) > 1:
+ parcour_profondeur_rec(n.c[1])
+
+def parcour_profondeur_rec_dic(n, A):
+
+ if len(A[n]) > 0:
+ parcour_profondeur_rec_dic(A[n][0], A)
+
+ print(n)
+
+ if len(A[n]) > 1:
+ parcour_profondeur_rec_dic(A[n][1], A)
+
+
+racine = Noeud("chien", [Noeud("petit", [Noeud("le")]), Noeud("et", [Noeud("jaune"), Noeud("noir")])])
+
+parcour_profondeur_rec(racine)
+
+A = {"chien": ["petit", "et"],
+ "petit": ["le"],
+ "le": [],
+ "et": ["jaune", "noir"],
+ "jaune": [],
+ "noir": []
+}
+
+parcour_profondeur_rec_dic("chien", A)
+
+print(A.keys())
\ No newline at end of file
diff --git a/TD01/code/bfs-tree.py b/TD01/code/bfs-tree.py
index 8599a5d..46ef666 100644
--- a/TD01/code/bfs-tree.py
+++ b/TD01/code/bfs-tree.py
@@ -1,4 +1,5 @@
import collections
+
class graph:
def __init__(self,gdict=None):
if gdict is None:
diff --git a/TD01/code/bfs.py b/TD01/code/bfs.py
index 3fa8624..93dee77 100644
--- a/TD01/code/bfs.py
+++ b/TD01/code/bfs.py
@@ -1,4 +1,5 @@
import collections
+
class graph:
def __init__(self,gdict=None):
if gdict is None:
diff --git a/TD01/code/comprehension-list-filter.py b/TD01/code/comprehension-list-filter.py
index 95bff0a..61c32be 100755
--- a/TD01/code/comprehension-list-filter.py
+++ b/TD01/code/comprehension-list-filter.py
@@ -1,4 +1,5 @@
carres = []
+
for x in range(10):
if x % 2:
carres.append(x * x)
diff --git a/TD01/code/fibo-comp.py b/TD01/code/fibo-comp.py
deleted file mode 100644
index b92d2d7..0000000
--- a/TD01/code/fibo-comp.py
+++ /dev/null
@@ -1,14 +0,0 @@
-def fibo1(f2, f1, i):
- if i > 0:
- return fibo1(f1, f2+f1, i-1)
- else:
- return f2
-
-
-def fibo2(f2, f1, i):
- while i > 0:
- f2, f1, i = f1, f2+f1, i-1
- return f2
-
-print(fibo1(6))
-print(fibo2(6))
\ No newline at end of file
diff --git a/TD01/code/fibo-mem.py b/TD01/code/fibo-mem.py
index bfcd71c..0279ffe 100644
--- a/TD01/code/fibo-mem.py
+++ b/TD01/code/fibo-mem.py
@@ -10,14 +10,9 @@ def fib(n, lookup):
# On renvoie la n-eme valeur
return lookup[n]
-
-def main():
- n = 6
- max = 100
- # Initialise la table de cache
- lookup = [None]*(max)
- print("Le nombre de fibonacci est ", fib(n, lookup))
- # Le nombre de fibonacci est 8
if __name__=="__main__":
- main()
\ No newline at end of file
+ n = 6
+ max = 100
+ lookup = [None]*(max) # initialise la table de cache
+ print("Le nombre de fibonacci est ", fib(n, lookup)) # affiche 8
\ No newline at end of file
diff --git a/TD01/code/fibo-rec.py b/TD01/code/fibo-rec.py
new file mode 100644
index 0000000..96bb4aa
--- /dev/null
+++ b/TD01/code/fibo-rec.py
@@ -0,0 +1,11 @@
+def fibo(n):
+ if n <= 1:
+ return n
+ else:
+ return(fibo(n-1) + fibo(n-2))
+
+if __name__=="__main__":
+ n = 10
+ print("Séquence de Fibonacci de {} nombres :".format(n))
+ for i in range(10):
+ print(fibo(i))
\ No newline at end of file
diff --git a/TD01/code/graph-check-color.py b/TD01/code/graph-check-color.py
new file mode 100644
index 0000000..57487f7
--- /dev/null
+++ b/TD01/code/graph-check-color.py
@@ -0,0 +1,38 @@
+class Node:
+ def __init__(self, v = None, n = []):
+ self.v = v
+ self.n = n
+ self.visited = False
+
+def verifier(r):
+
+ stack = [r]
+
+ while len(stack) > 0:
+ c = stack.pop(0)
+ for n in c.n:
+ if(c.v == n.v): # meme couleur
+ print("deux voisins de meme couleur")
+ return False
+ if not n.visited:
+ stack.append(n)
+ n.visited = True
+
+ return True
+
+if __name__=="__main__":
+ n1 = Node("gray")
+ n2 = Node("black")
+ n3 = Node("gray")
+ n4 = Node("gray")
+ n5 = Node("black")
+ n6 = Node("gray")
+
+ n1.n = [n2]
+ n2.n = [n1, n3, n4]
+ n3.n = [n2, n5]
+ n4.n = [n2, n5]
+ n5.n = [n3, n4, n6]
+ n6.n = [n5]
+
+ print(verifier(n1)) # True
\ No newline at end of file
diff --git a/TD01/code/graph-labyrinthe.py b/TD01/code/graph-labyrinthe.py
new file mode 100644
index 0000000..fe72013
--- /dev/null
+++ b/TD01/code/graph-labyrinthe.py
@@ -0,0 +1,36 @@
+labyrinthe = [[0, 1, 0, 0, 0, 0, 0, 0, 0, 0],
+ [0, 1, 0, 1, 1, 1, 1, 1, 1, 0],
+ [0, 1, 0, 1, 0, 0, 0, 0, 1, 0],
+ [0, 1, 0, 1, 0, 1, 1, 0, 1, 0],
+ [0, 0, 0, 1, 0, 1, 1, 0, 1, 0],
+ [0, 1, 0, 1, 0, 0, 1, 0, 1, 0],
+ [0, 1, 0, 1, 1, 1, 1, 0, 1, 0],
+ [0, 1, 0, 0, 0, 0, 0, 0, 1, 0],
+ [0, 1, 1, 1, 0, 1, 1, 1, 1, 0],
+ [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]
+
+def affiche_labyrinthe (l):
+ print('\n'.join(''.join('#' if item else '.' for item in row) for row in l))
+ print()
+
+def voisins(l, x, y):
+ return ((x+dx, y+dy)
+ for dx, dy in ((-1,-1), (-1,0), (-1,1), (0,-1), (0,1), (1,-1), (1,0), (1,1))
+ if 0 <= x+dx < len(l[0]) and 0 <= y+dy < len(l) and l[y+dy][x+dx] == 0)
+
+# IMPORTANT : chaque appel récursif ne doit pas modifier les chemins des autres,
+# donc chacun a une copie non modifiable du chemin, ce pourquoi on utilise un tuple plutôt que liste
+def existe_profondeur(l, x0=0, y0=0, chemin=()):
+ # print(x0, y0)
+ if (x0, y0) == (len(l[0])-1, len(l)-1): # condition de terminaison
+ return True
+ chemin += ((x0, y0),) # on crée un nouveau chemin avec la position courante
+ for x, y in voisins(l, x0, y0):
+ if (x, y) in chemin: # on ignore le voisin si déjà visité par le chemin courant
+ continue
+ if existe_profondeur(l, x, y, chemin): # appel récursif à partir de la position voisine
+ return True # on a trouvé un chemin par la position voisine, donc aussi par l'actuelle
+ return False # aucun des voisins ne mène à la sortie, donc l'actuelle non plus
+
+affiche_labyrinthe(labyrinthe)
+print(existe_profondeur(labyrinthe))
diff --git a/TD01/code/graphe_dico.py b/TD01/code/graphe-dico.py
similarity index 100%
rename from TD01/code/graphe_dico.py
rename to TD01/code/graphe-dico.py
diff --git a/TD01/code/graphe-liens.py b/TD01/code/graphe-liens.py
new file mode 100644
index 0000000..f14d367
--- /dev/null
+++ b/TD01/code/graphe-liens.py
@@ -0,0 +1,23 @@
+class Graphe:
+ def __init__(self, *args):
+ self.edges = [e for e in args]
+ self.nodes = []
+ for e in self.edges:
+ if e[0] not in self.nodes:
+ self.nodes += [ e[0] ]
+ if e[1] not in self.nodes:
+ self.nodes += [ e[1] ]
+
+ def mat(self):
+ self.mat = [[ 0 for j in range(len(self.nodes))] for i in range(len(self.nodes))]
+ for i in self.edges:
+ self.mat[ self.nodes.index(i[0]) ][ self.nodes.index(i[1]) ] = 1
+ self.mat[ self.nodes.index(i[1]) ][ self.nodes.index(i[0]) ] = 1
+
+ return self.mat
+
+if __name__ == "__main__":
+ G = Graphe( ('A','B') , ('A','C') , ('B','C') )
+ print( 'Les noeuds de G sont : {}'.format(G.nodes) )
+ print( 'Les arêtes de G sont : {}'.format(G.edges) )
+ print( 'La matrice d\'adjacence de G est : {}'.format(G.mat()) )
\ No newline at end of file
diff --git a/TD01/code/graphe-matrice.py b/TD01/code/graphe-matrice.py
new file mode 100644
index 0000000..d4fe76a
--- /dev/null
+++ b/TD01/code/graphe-matrice.py
@@ -0,0 +1,12 @@
+
+# Création d'un matrice d'adjacence pour un graphe
+n = 5
+G = [[0 for j in range(n)] for i in range (n)]
+
+# Ajout d'un lien (si le graphe est non orienté)
+G[0][1] = 1
+G[1][0] = 1
+
+# Affichage du graphe
+for row in G:
+ print(row)
\ No newline at end of file
diff --git a/TD01/code/listes-fusion.py b/TD01/code/listes-fusion.py
new file mode 100644
index 0000000..9bf050b
--- /dev/null
+++ b/TD01/code/listes-fusion.py
@@ -0,0 +1,26 @@
+def fusion(l1, l2):
+
+ res = []
+ i = 0
+ j = 0
+
+ while i < len(l1) and j < len(l2):
+ if l1[i] < l2[j]:
+ res.append(l1[i])
+ i += 1
+ else:
+ res.append(l2[i])
+ j += 1
+
+ while i < len(l1):
+ res.append(l1[i])
+ i += 1
+
+ while j < len(l2):
+ res.append(l2[j])
+ j += 1
+
+ return res
+
+print(fusion([2, 2, 3], [0, 4, 5, 14, 20, 25]))
+# [0, 2, 2, 3, 4, 5, 14, 20, 25]
\ No newline at end of file
diff --git a/TD01/code/recherche-dico.py b/TD01/code/recherche-dico.py
index 427a4bb..94c069d 100644
--- a/TD01/code/recherche-dico.py
+++ b/TD01/code/recherche-dico.py
@@ -13,4 +13,5 @@ def recherche(element, liste):
return a
-print (recherche(3, [3, 1, 4, 2, 3]))
+if __name__=="__main__":
+ print (recherche(3, [3, 1, 4, 2, 3]))
diff --git a/TD01/code/tri-stabilite.py b/TD01/code/tri-stabilite.py
index 3e4e78d..77fe07c 100644
--- a/TD01/code/tri-stabilite.py
+++ b/TD01/code/tri-stabilite.py
@@ -13,5 +13,5 @@ def algo(words):
return list(res)
-
-print(algo(["Pierre", "Jean", "Marie", "Eric", "Nathalie", "Yvonne"]))
\ No newline at end of file
+if __name__=="__main__":
+ print(algo(["Pierre", "Jean", "Marie", "Eric", "Nathalie", "Yvonne"]))
\ No newline at end of file
--
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