From e7197092b56e45394f8d9f9cb42a3207e9da2976 Mon Sep 17 00:00:00 2001
From: Ryan Geary <rtgnj42@gmail.com>
Date: Tue, 10 Sep 2019 23:51:01 -0400
Subject: [PATCH] Validate vector indeces

---
 src/main.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index ce548c4..68ff3cb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -19,7 +19,11 @@ impl Choice {
         let words: Vec<&str> = line.split_whitespace().collect();
 
         match self {
-            Choice::Field(i) => print!("{} ", words[*i as usize]),
+            Choice::Field(i) => {
+                if *i < words.len().try_into().unwrap() {
+                    print!("{} ", words[*i as usize]);
+                }
+            },
             Choice::FieldRange(r) => match r {
                 (None, None) => print!("{}", words.into_iter().collect::<String>()),
                 (Some(start), None) => print!(