Add code for 2015 advent that I did historically.

day_1/info.md

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+Problem: https://adventofcode.com/2015/day/1
+
+
+Part 1:
+Calculating the delta
+
+
+Part 2:
+Calculating the first step in the instructions to cause Santa to go into the
+basement

day_1/part_1.py

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+data = input("Input Instruction set: \n")
+
+
+# floor_delta = 0
+
+# for char in data:
+# 	if char == "(": floor_delta += 1
+# 	elif char == ")": floor_delta -= 1
+
+
+# This is equivalent to commented out code above
+# DONE FOR FUN, Wouldn't use in production...
+print(sum([ 1 if char == "(" else -1 for char in data]))

day_1/part_2.py

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+data = input("Input Instruction set: \n")
+
+floor_delta = 0
+first_negative_instruction = None
+
+
+# Run through instruction set
+for index in range(len(data)):
+	char = data[index]
+
+	# Increment floor delta
+	if char == "(":
+		floor_delta += 1
+
+	# Decrement floor delta and track what the first index that causes us to go
+	# negative is.
+	elif char == ")":
+		floor_delta -= 1
+		if floor_delta == -1 and not first_negative_instruction:
+			first_negative_instruction = index + 1
+			break
+
+print(f"First Negative Instruction: {first_negative_instruction}")