Add: 10->12, 17

2015/10.py

@@ -0,0 +1,46 @@
+input = "1"
+
+def look_and_say(input):
+	s = ""
+	last = 'x'
+	count = 1
+
+	for n in input:
+		if last == 'x':
+			last = n
+			count = 1
+			continue;
+
+		if last == n:
+			count += 1
+			continue;
+
+		s+=f"{count}{last}"
+		
+		last=n
+		count=1
+
+	return s+f"{count}{n}"
+
+
+""" Not worth it
+def recursive_look_and_say(input):
+	j = len(input)//2
+
+	while True:
+		if j == len(input)-1:
+			return look_and_say(input)
+
+		# Assert 'j' does not divide repeating characters
+		if input[j] != input[j+1]:
+			return recursive_look_and_say(input[:j+1])+ recursive_look_and_say(input[j+1:])
+
+		j+=1
+"""
+
+
+# Result
+
+for i in range(50):
+	input = look_and_say(input)
+print(len(input))