commit 1246bcf29d9f8af9415f7e8dc8ed620714adc9b2
parent e7b86edb90af39628d7e2ffab632cd8f5919adac
Author: Shimmy Xu <shimmy.xu@shimmy1996.com>
Date: Wed, 4 Dec 2019 13:02:09 -0500
Add Julia solution for day 04
Diffstat:
| A | day-04/day-04.jl | | | 91 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
1 file changed, 91 insertions(+), 0 deletions(-)
diff --git a/day-04/day-04.jl b/day-04/day-04.jl
@@ -0,0 +1,91 @@
+function part_1(input)
+ start = input[1]
+ finish = input[2]
+ pw_count = 0
+ for first in (start ÷ 100000):(finish ÷ 100000)
+ for second in first:9
+ if first * 100000 + second * 10000 > finish
+ break
+ end
+ for third in second:9
+ for forth in third:9
+ for fifth in forth:9
+ for sixth in fifth:9
+ pw = (
+ first * 100000
+ + second * 10000
+ + third * 1000
+ + forth * 100
+ + fifth * 10
+ + sixth
+ )
+ # Ensure in range.
+ if pw >= start && pw <= finish
+ if (
+ first == second
+ || second == third
+ || third == forth
+ || forth == fifth
+ || fifth == sixth
+ )
+ pw_count += 1
+ end
+ end
+ end
+ end
+ end
+ end
+ end
+ end
+ pw_count
+end
+
+function part_2(input)
+ start = input[1]
+ finish = input[2]
+ pw_count = 0
+ for first in (start ÷ 100000):(finish ÷ 100000)
+ for second in first:9
+ if first * 100000 + second * 10000 > finish
+ break
+ end
+ for third in second:9
+ for forth in third:9
+ for fifth in forth:9
+ for sixth in fifth:9
+ pw = (
+ first * 100000
+ + second * 10000
+ + third * 1000
+ + forth * 100
+ + fifth * 10
+ + sixth
+ )
+ # Ensure in range.
+ if pw >= start && pw <= finish
+ if (
+ (first == second && second != third)
+ || (first != second && second == third && third != forth)
+ || (second != third && third == forth && forth != fifth)
+ || (third != forth && forth == fifth && fifth != sixth)
+ || (forth != fifth && fifth == sixth)
+ )
+ pw_count += 1
+ end
+ end
+ end
+ end
+ end
+ end
+ end
+ end
+ pw_count
+end
+
+input = map(readlines(open("input.txt"))) do line
+ map(x -> parse(Int, x), split(strip(line), '-'))
+end[1]
+
+println("Julia:")
+println("Part 1: ", part_1(input))
+println("Part 2: ", part_2(input))