1 files changed, 44 insertions, 0 deletions
diff --git a/semestre 3/structures des données/td/td3/exo3.py b/semestre 3/structures des données/td/td3/exo3.py
new file mode 100644
index 0000000..93dde73
--- /dev/null
+++ b/semestre 3/structures des données/td/td3/exo3.py
@@ -0,0 +1,44 @@
+val = [
+    ("le", 123), ("cours", 22), ("appelé", 88), ("structure", 43), ("de", 4),
+    ("données", 28), ("est", 73), ("absolument", 7), ("génial", 13)
+]
+
+
+def f1(x):
+    return x
+
+
+def f2(x):
+    return 10*x
+
+
+def f3(x):
+    return 2*x
+
+
+def f4(x):
+    if x == 0:
+        return 0
+    return 8 * f4(int(x/10)) + x % 10
+
+
+print([(a,f1(b)) for a, b in val])
+print("")
+print([(a,f2(b)) for a, b in val])
+print("")
+print([(a,f3(b)) for a, b in val])
+print("")
+print([(a,f4(b)) for a, b in val])
+
+print("")
+print("collisions f1", len(val) - len({ f1(b) % 10 for _, b in val }))
+print("")
+print("collisions f2", len(val) - len({ f2(b) % 10 for _, b in val }))
+print("")
+print("collisions f3", len(val) - len({ f3(b) % 10 for _, b in val }))
+print("")
+print("collisions f4", len(val) - len({ f4(b) % 10 for _, b in val }))
+
+
+print("")
+print("La meilleure fonction est donc f4, car elle génère moins de collisions que les autres")