From 7b93826c567dc193d989c300b781ae7065378f02 Mon Sep 17 00:00:00 2001
From: mitchellhansen <mitchellhansen0@gmail.com>
Date: Sun, 6 Dec 2020 16:10:49 -0800
Subject: [PATCH] problem 7 template

---
 src/main.rs         | 12 +++++++++---
 src/problem7/lib.rs | 46 +++++++++++++++++++++++++++++++++++++++++++++
 src/problem7/mod.rs |  1 +
 3 files changed, 56 insertions(+), 3 deletions(-)
 create mode 100644 src/problem7/lib.rs
 create mode 100644 src/problem7/mod.rs

diff --git a/src/main.rs b/src/main.rs
index 595cd10..f0906f5 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -7,6 +7,7 @@ use crate::problem3::lib::Problem3;
 use crate::problem4::lib::Problem4;
 use crate::problem5::lib::Problem5;
 use crate::problem6::lib::Problem6;
+use crate::problem7::lib::Problem7;
 
 mod problem1;
 mod problem2;
@@ -14,6 +15,7 @@ mod problem3;
 mod problem4;
 mod problem5;
 mod problem6;
+mod problem7;
 mod util;
 
 
@@ -47,7 +49,11 @@ fn main() {
     // problem5.run_part1();
     // problem5.run_part2();
 
-    let problem6 = Problem6::new(&util::get_problem(6));
-    problem6.run_part1();
-    problem6.run_part2();
+    // let problem6 = Problem6::new(&util::get_problem(6));
+    // problem6.run_part1();
+    // problem6.run_part2();
+
+    let problem7 = Problem7::new(&util::get_problem(7));
+    problem7.run_part1();
+    problem7.run_part2();
 }
diff --git a/src/problem7/lib.rs b/src/problem7/lib.rs
new file mode 100644
index 0000000..985848b
--- /dev/null
+++ b/src/problem7/lib.rs
@@ -0,0 +1,46 @@
+
+
+use crate::Problem;
+use std::collections::HashSet;
+
+pub struct Problem7 {
+    groups: Vec<HashSet<char>>,
+}
+
+
+impl Problem7 {}
+
+impl Problem for Problem7 {
+    fn new(input: &String) -> Self {
+        Problem7 {
+            groups: input
+                .split("\n\n")
+                .filter_map(|s| {
+                    let s = s.trim().split("\n");
+                    let mut sets = Vec::new();
+                    for i in s {
+                        let v : HashSet<char> = i.chars().filter_map(|c| {
+                            if c.is_whitespace() {
+                                None
+                            } else {
+                                Some(c)
+                            }
+                        }).collect::<HashSet<char>>();
+                        sets.push(v);
+                    }
+                    let mut iter = sets.iter();
+                    let intersection : HashSet<char> =
+                        iter.next().map(|set| iter.fold(set.clone(), |set1, set2| set1.intersection(set2).map(|c| *c).collect())).unwrap().clone();
+                    Some(intersection)
+                }).collect(),
+        }
+    }
+
+    fn run_part1(&self) {
+
+    }
+
+    fn run_part2(&self) {
+    }
+}
+
diff --git a/src/problem7/mod.rs b/src/problem7/mod.rs
new file mode 100644
index 0000000..965f28e
--- /dev/null
+++ b/src/problem7/mod.rs
@@ -0,0 +1 @@
+pub mod lib;