Part 1 complete!

Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

input.day_13.txt

@@ -0,0 +1,449 @@
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+
+[[4,[[4,0,1,2],[],[6,4,0],[2,3]],8,[[4],[8,1,0,8],2]],[[[],0]],[],[7],[]]
+[[[[],5,[3,7,9,6,7],[10,8,3,1]],[10,3,6,10,0],[0,5,[]],[],6],[],[4,[[8,3,8]],[[5,10,9],10,[7,1]],3],[]]
+
+[[[10,[8,1],9]]]
+[[8,[4],3,6,9],[1,0,[[0,9,1,10,9],[5,4,8,0,7],[3,5,5,8]],[[3,8],[9,3,7,0,3],3,[]],[8,7,3]],[4],[[]]]
+
+[[10,[]],[8,7,[]],[[6]]]
+[[[4,[3],1,[2],9],5,[5],3],[[[5,6,7],[],10,[5,6],[]],[5,3,8,[9,10,7]],[3,10,[7,10,5,4,1],[2,6,5,7,0],[2,1,0,1]],9],[[[8,7,3,8],[]],3,[8]]]

main.cpp

@@ -2,72 +2,74 @@
 #include "pixelGameEngine.h"
 #include "olcutils.h"
 #include "List.h"
+#include <cassert>
 
-bool examineList(List*list1,List*list2){
+enum status{
-    if (list1->index>=list1->elements.size()){
+    FALSE,
-        return true;
+    TRUE,
-    }
+    CONTINUE
+};
+
+status examineList(List*list1,List*list2){
+    std::cout<<"Examining "<<*list1<<" vs "<<*list2<<std::endl;
     while (true) {
-        if (list1->elements.size()>list2->elements.size()){
+        if (list2->index>=list2->elements.size()&&list1->elements.size()>list1->index){
-            return false;
+            return FALSE;
         }
-        if (list1->elements[list1->index].list!=nullptr){
+        if (list1->index>=list1->elements.size()){
-            if (list2->elements[list2->index].list==nullptr){
+            if (list2->index>=list2->elements.size()){
-                //List 1: List
+                return CONTINUE;
-                //List 2: Number
+            }
-                List*prevPtr=list1;
+            return TRUE;
-                while (list1->elements[list1->index].list!=nullptr){
+        }
-                    list1=list1->elements[list1->index].list;
+        Element e1=list1->elements[list1->index];
-                }
+        Element e2=list2->elements[list2->index];
-                //Now we should be at a number.
+        if (e1.list==nullptr&&e2.list==nullptr){
-                if (list1->elements[list1->index].number>list2->elements[list2->index].number){
+            if (e1.number<e2.number){
-                    return false;
+                return TRUE;
-                }
+            } else if (e1.number>e2.number){
-                list1=prevPtr;
+                return FALSE;
-            } else {
+            }
-                //List 1: List
+        } else 
-                //List 2: List
+        if (e1.list!=nullptr&&e2.list!=nullptr){
-                if (!examineList(list1->elements[list1->index].list,list2->elements[list2->index].list)){
+            status Result = examineList(e1.list,e2.list);
-                    return false;
+            if (Result!=CONTINUE){
-                }
+                return Result;
             }
-            //It's a list.
         } else {
-            //Compare number.
+            if (e1.list==nullptr){
-            if (list2->elements[list2->index].list==nullptr){
+                e1.list = new List();
-                //List 1: Number
+                Element newE;
-                //List 2: Number
+                newE.number=e1.number;
-                if (list1->elements[list1->index].number>list2->elements[list2->index].number){
+                e1.list->elements.push_back(newE);
-                    return false;
+                status Result = examineList(e1.list,e2.list);
-                }
+                if (Result!=CONTINUE){
+                    return Result;
+                }   
             } else {
-                //List 1: Number
+                e2.list = new List();
-                //List 2: List
+                Element newE;
-                List*prevPtr=list2;
+                newE.number=e2.number;
-                while (list2->elements[list2->index].list!=nullptr){
+                e2.list->elements.push_back(newE);
-                    list2=list2->elements[list2->index].list;
+                status Result = examineList(e1.list,e2.list);
-                }
+                if (Result!=CONTINUE){
-                //Now we should be at a number.
+                    return Result;
-                if (list2->elements[list2->index].number<list1->elements[list1->index].number){
+                }   
-                    return false;
-                }
-                list2=prevPtr;
             }
         }
         list1->index++;
         list2->index++;
-        if (list1->index>=list1->elements.size()||list2->index>=list2->elements.size()){
-            break;
-        }
     }
-    return true;
+    return TRUE; //Inputs are in the right order.
 }
 
 using namespace olc;
 int main()
 {
-	std::ifstream file("testinput");
+    int sum=0;
+	std::ifstream file("input");
     int index=1;
+    std::vector<List*>lists;
     while (file.good()){
         std::string line;
         List*list1;
@@ -118,8 +120,10 @@ int main()
         std::getline(file,line);
         std::cout<<"List 1: "<<*list1<<std::endl;
         std::cout<<"List 2: "<<*list2<<std::endl;
-        int sum=0;
+        bool passed=true;
-        bool passed=examineList(list1,list2);
+        if (passed) {
+            passed=examineList(list1,list2);
+        }
         if (passed){
             sum+=index;
             std::cout<<"Passed! Sum:"<<sum<<std::endl;
@@ -128,6 +132,7 @@ int main()
         }
         index++;
     }
+    std::cout<<"Sum: "<<sum<<std::endl;
 
 	return 0;
 }

part1

@@ -0,0 +1,137 @@
+#define OLC_PGE_APPLICATION
+#include "pixelGameEngine.h"
+#include "olcutils.h"
+#include "List.h"
+#include <cassert>
+
+enum status{
+    FALSE,
+    TRUE,
+    CONTINUE
+};
+
+status examineList(List*list1,List*list2){
+    std::cout<<"Examining "<<*list1<<" vs "<<*list2<<std::endl;
+    while (true) {
+        if (list2->index>=list2->elements.size()&&list1->elements.size()>list1->index){
+            return FALSE;
+        }
+        if (list1->index>=list1->elements.size()){
+            if (list2->index>=list2->elements.size()){
+                return CONTINUE;
+            }
+            return TRUE;
+        }
+        Element e1=list1->elements[list1->index];
+        Element e2=list2->elements[list2->index];
+        if (e1.list==nullptr&&e2.list==nullptr){
+            if (e1.number<e2.number){
+                return TRUE;
+            } else if (e1.number>e2.number){
+                return FALSE;
+            }
+        } else 
+        if (e1.list!=nullptr&&e2.list!=nullptr){
+            status Result = examineList(e1.list,e2.list);
+            if (Result!=CONTINUE){
+                return Result;
+            }
+        } else {
+            if (e1.list==nullptr){
+                e1.list = new List();
+                Element newE;
+                newE.number=e1.number;
+                e1.list->elements.push_back(newE);
+                status Result = examineList(e1.list,e2.list);
+                if (Result!=CONTINUE){
+                    return Result;
+                }   
+            } else {
+                e2.list = new List();
+                Element newE;
+                newE.number=e2.number;
+                e2.list->elements.push_back(newE);
+                status Result = examineList(e1.list,e2.list);
+                if (Result!=CONTINUE){
+                    return Result;
+                }   
+            }
+        }
+        list1->index++;
+        list2->index++;
+    }
+    return TRUE; //Inputs are in the right order.
+}
+
+using namespace olc;
+int main()
+{
+    int sum=0;
+	std::ifstream file("input");
+    int index=1;
+    while (file.good()){
+        std::string line;
+        List*list1;
+        List*list2;
+        for (int j=0;j<2;j++){
+            std::getline(file,line);
+            List*startingList=new List();
+            List*currentList=nullptr;
+            for (int i=0;i<line.length();i++){
+                if (line[i]=='['){
+                    //std::cout<<"Read "<<line[i]<<"...";
+                    if (currentList==nullptr){
+                        currentList=startingList;
+                    } else {
+                        List*newList=new List();
+                        Element el;
+                        el.list=newList;
+                        newList->parent=currentList;
+                        currentList->elements.push_back(el);
+                        currentList=el.list;
+                    }
+                } else 
+                if (line[i]==']'){
+                    //std::cout<<"Read "<<line[i]<<"...";
+                    currentList=currentList->parent;
+                } else 
+                if (line[i]==','){
+                    //std::cout<<"Read "<<line[i]<<"...";
+                    continue;
+                } else {//Assume it's a digit.
+                    std::string acc="";
+                    while (line[i]>='0'&&line[i]<='9'){
+                        //std::cout<<"Read "<<line[i]<<"...";
+                        acc+=line[i++];
+                    }
+                    Element el;
+                    el.number=std::atoi(acc.c_str());
+                    currentList->elements.push_back(el);
+                    i--;
+                }
+            }
+            if (j==0){
+                list1=startingList;
+            } else {
+                list2=startingList;
+            }
+        }
+        std::getline(file,line);
+        std::cout<<"List 1: "<<*list1<<std::endl;
+        std::cout<<"List 2: "<<*list2<<std::endl;
+        bool passed=true;
+        if (passed) {
+            passed=examineList(list1,list2);
+        }
+        if (passed){
+            sum+=index;
+            std::cout<<"Passed! Sum:"<<sum<<std::endl;
+        } else {
+            std::cout<<"Failed"<<std::endl;
+        }
+        index++;
+    }
+    std::cout<<"Sum: "<<sum<<std::endl;
+
+	return 0;
+}