From f6a8c542e8b2083df9a5815c1ba2c109cfebf05c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gustav=20S=C3=B6rn=C3=A4s?= <gustav@sornas.net>
Date: Tue, 1 Dec 2020 16:15:03 +0100
Subject: const &

---
 labb5/src/Boggle.cpp | 20 ++++++++++++--------
 labb5/src/Boggle.h   |  4 ++--
 2 files changed, 14 insertions(+), 10 deletions(-)

(limited to 'labb5/src')

diff --git a/labb5/src/Boggle.cpp b/labb5/src/Boggle.cpp
index 9ae2d94..829be35 100755
--- a/labb5/src/Boggle.cpp
+++ b/labb5/src/Boggle.cpp
@@ -137,10 +137,11 @@ bool Boggle::find_single_word(const string& word) const {
     bool found = false;
     for (int y = 0; y < BOARD_SIZE; y++) {
         for (int x = 0; x < BOARD_SIZE; x++) {
+            set<point> initial_points;
             found = find_single_word_helper(word,
                                             make_pair(x, y),
                                             string(1, board[y][x]),
-                                            set<point>());
+                                            initial_points);
             if (found) break;
         }
         if (found) break;
@@ -163,9 +164,9 @@ bool Boggle::find_single_word(const string& word) const {
 
 bool Boggle::find_single_word_helper(
     const string& word,
-    point cur_point,
-    string cur_word,
-    set<point> visited
+    const point& cur_point,
+    const string& cur_word,
+    set<point>& visited
 ) const {
     if (cur_word == word) {
         return true;
@@ -184,6 +185,7 @@ bool Boggle::find_single_word_helper(
             }
         }
     }
+    visited.erase(cur_point);
     return false;
 }
 
@@ -192,10 +194,11 @@ set<string> Boggle::find_all_words() const {
     auto start = std::chrono::high_resolution_clock::now();
     for (int y = 0; y < BOARD_SIZE; y++) {
         for (int x = 0; x < BOARD_SIZE; x++) {
+            set<point> initial_points;
             find_all_words_helper(words,
                                   make_pair(x, y),
                                   string(1, board[y][x]),
-                                  set<point>());
+                                  initial_points);
         }
     }
     auto end = std::chrono::high_resolution_clock::now();
@@ -211,9 +214,9 @@ set<string> Boggle::find_all_words() const {
 
 void Boggle::find_all_words_helper(
     set<string>& words,
-    point cur_point,
-    string cur_word,
-    set<point> visited
+    const point& cur_point,
+    const string& cur_word,
+    set<point>& visited
 ) const {
     if (cur_word.length() >= 4
         && words.count(cur_word) == 0
@@ -233,6 +236,7 @@ void Boggle::find_all_words_helper(
             find_all_words_helper(words, neighbour, new_word, visited);
         }
     }
+    visited.erase(cur_point);
 }
 
 string Boggle::board_to_string() const {
diff --git a/labb5/src/Boggle.h b/labb5/src/Boggle.h
index 8f68e92..95dd0b7 100755
--- a/labb5/src/Boggle.h
+++ b/labb5/src/Boggle.h
@@ -106,8 +106,8 @@ private:
     const int MIN_WORD_LENGTH = 4;
     static const int BOARD_SIZE = 4;
 
-    void find_all_words_helper(set<string>& words, point cur_point, string cur_word, set<point> visited) const;
-    bool find_single_word_helper(const string& word, point cur_point, string cur_word, set<point> visited) const;
+    void find_all_words_helper(set<string>& words, const point& cur_point, const string& cur_word, set<point>& visited) const;
+    bool find_single_word_helper(const string& word, const point& cur_point, const string& cur_word, set<point>& visited) const;
 
     Lexicon dictionary;
     Grid<char> board;
-- 
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