~afk/advent-of-code-2020: 03: Solutions

7 files changed, 475 insertions(+), 1 deletions(-)

A 03.01/main.c
A 03.02/main.c
M 05.01/main.c
A bin/03.01
A bin/03.02
A input/03-test.txt
A input/03.01.txt

A 03.01/main.c => 03.01/main.c +62 -0

@@ 0,0 1,62 @@
+#include <stdio.h>
+#define STR_MAX_SIZE 256
+
+int
+slen(char *s)
+{
+	int n = 0;
+	while(s[n] != '\0' && s[++n])
+		;
+	return n;
+}
+
+int
+loadtxt(FILE *f)
+{
+	char line[BUFSIZ];
+	char c = 0;
+	int x = 0;
+	int y = 0;
+	int acc = 0;
+	int len = 0;
+
+	if(!f) {
+		printf("No file \n");
+		return acc;
+	}
+
+	while(fgets(line, BUFSIZ, f)) {
+		if(len == 0) {
+			len = slen(line) - 1;
+		}
+		c = line[x];
+		if(c == '#') {
+			acc++;
+		}
+		printf("[%d,%d]=>%c\n", x, y, c);
+		printf("\n");
+		x += 3;
+		x = x % len;
+		y++;
+	}
+
+	fclose(f);
+	return acc;
+}
+
+int
+main(int argc, char *argv[])
+{
+	int c;
+	if(argc < 1) {
+		printf("No input file");
+		return 0;
+	}
+
+	printf("-- Day 03.01 \n\n");
+
+	c = loadtxt(fopen(argv[1], "r"));
+	printf("\n--\nResult: %d\n", c);
+
+	return (0);
+}

A 03.02/main.c => 03.02/main.c +78 -0

@@ 0,0 1,78 @@
+#include <stdio.h>
+#define STR_MAX_SIZE 256
+
+int
+slen(char *s)
+{
+	int n = 0;
+	while(s[n] != '\0' && s[++n])
+		;
+	return n;
+}
+
+int
+loadtxt(FILE *f, int deltax, int deltay)
+{
+	char line[BUFSIZ];
+	char c = 0;
+	int x = 0;
+	int y = 0;
+	int acc = 0;
+	int len = 0;
+
+	if(!f) {
+		printf("No file \n");
+		return acc;
+	}
+
+	while(fgets(line, BUFSIZ, f)) {
+
+		if(y % deltay != 0) {
+			/* printf("%d-%d-%d\n", y, deltay, y % deltay); */
+			y++;
+			continue;
+		}
+
+		if(len == 0) {
+			len = slen(line) - 1;
+		}
+		c = line[x];
+		if(c == '#') {
+			acc++;
+		}
+		printf("[%d,%d]=>%c\n", x, y, c);
+		x += deltax;
+		x = x % len;
+		y++;
+	}
+
+	fclose(f);
+	return acc;
+}
+
+int
+main(int argc, char *argv[])
+{
+	int c;
+	int acc = 1;
+	int i = 0;
+	int x[] = {1, 3, 5, 7, 1};
+	int y[] = {1, 1, 1, 1, 2};
+
+	if(argc < 1) {
+		printf("No input file");
+		return 0;
+	}
+
+	printf("-- Day 03.01 \n\n");
+
+	for(i = 0; i < 5; ++i) {
+		c = loadtxt(fopen(argv[1], "r"), x[i], y[i]);
+		acc *= c;
+		printf("--\nAcc: %d\n--\n", c);
+	}
+
+	printf("--\nResult: %d\n--\n", acc);
+
+	return (0);
+}

M 05.01/main.c => 05.01/main.c +0 -1

@@ 1,5 1,4 @@
 #include <stdio.h>
-#include <string.h>
 
 #define INPUT_SIZE 2160
 #define STR_MAX_SIZE 256

A bin/03.01 => bin/03.01 +0 -0

A bin/03.02 => bin/03.02 +0 -0

A input/03-test.txt => input/03-test.txt +11 -0

@@ 0,0 1,11 @@
+..##.......
+#...#...#..
+.#....#..#.
+..#.#...#.#
+.#...##..#.
+..#.##.....
+.#.#.#....#
+.#........#
+#.##...#...
+#...##....#
+.#..#...#.#

A input/03.01.txt => input/03.01.txt +324 -0

@@ 0,0 1,324 @@
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