Big Bang

1 files changed, 65 insertions, 0 deletions

diff --git a/Advent-of-Code-2021/AOC-6/aoc-6.c~ b/Advent-of-Code-2021/AOC-6/aoc-6.c~
new file mode 100644
index 0000000..5b51725
--- /dev/null
+++ b/Advent-of-Code-2021/AOC-6/aoc-6.c~
@@ -0,0 +1,65 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define N 9
+#define MAXDAYS 80
+
+int table[N];
+
+void PrintTable()
+{
+  for(int i=0; i<N; i++)
+  {
+    printf("%d: %d\n", i, table[i]);
+  }
+}
+
+void NextDay()
+{
+  int temp_table[N];
+  memset(temp_table, 0, sizeof(int)*N);
+
+  for(int i=1; i<N; i++)
+  {
+    temp_table[i-1] = table[i];
+  }
+
+  temp_table[6] += table[0];
+  temp_table[8] += table[0];
+
+  memcpy(table, temp_table, sizeof(int)*N);
+}
+
+int TableSize()
+{
+  int size = 0;
+  for(int i=0; i<N; i++)
+  {
+    size += table[i];
+  }
+
+  return size;
+}
+
+int main(void)
+{
+  memset(table, 0, sizeof(int)*N);
+
+  table[1] = 1;
+  table[2] = 1;
+  table[3] = 2;
+  table[4] = 1;
+
+  for(int i=0; i < MAXDAYS; i++) 
+  {
+    NextDay();
+  }
+
+  PrintTable();
+  printf("Size: %d\n", TableSize());
+  printf("Day:  %d\n", MAXDAYS);
+  
+  return 0;
+}