From 8eef1a5fe2075c07d659c3424cafffcb4819eaec Mon Sep 17 00:00:00 2001
From: Xamora <xamora@42l.fr>
Date: Mon, 2 Dec 2024 06:48:31 +0100
Subject: [PATCH] finish 02

---
 02/_.h       |   25 ++
 02/a.out     |  Bin 0 -> 19808 bytes
 02/main.txt  | 1000 ++++++++++++++++++++++++++++++++++++++++++++++++++
 02/mylib.c   |   84 +++++
 02/part1.c   |   37 ++
 02/part1.sh  |    1 +
 02/part2.c   |   57 +++
 02/part2.sh  |    1 +
 02/test.txt  |    6 +
 02/test2.txt |    1 +
 10 files changed, 1212 insertions(+)
 create mode 100644 02/_.h
 create mode 100755 02/a.out
 create mode 100644 02/main.txt
 create mode 100644 02/mylib.c
 create mode 100644 02/part1.c
 create mode 100755 02/part1.sh
 create mode 100644 02/part2.c
 create mode 100755 02/part2.sh
 create mode 100644 02/test.txt
 create mode 100644 02/test2.txt

diff --git a/02/_.h b/02/_.h
new file mode 100644
index 0000000..3f93823
--- /dev/null
+++ b/02/_.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <strings.h>
+#include <wctype.h>
+#include <math.h>
+
+#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
+#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
+#define ABS(X) ((X) >= 0 ? (X) : -(X))
+
+char** str_split(char* a_str, const char a_delim);
+
+int str_index(char *str, char c);
+
+int number_of_element(char *str, char c);
+
+long gmc(long a, long b);
+long lmc(long a, long b);
+long lmcs(int array[], int n);
diff --git a/02/a.out b/02/a.out
new file mode 100755
index 0000000000000000000000000000000000000000..db78779c1ba050639e35e7b77ee180f966323587
GIT binary patch
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diff --git a/02/mylib.c b/02/mylib.c
new file mode 100644
index 0000000..a8a4205
--- /dev/null
+++ b/02/mylib.c
@@ -0,0 +1,84 @@
+#include "_.h"
+
+// NOT MY CODE
+// https://stackoverflow.com/questions/9210528/split-string-with-delimiters-in-c
+char** str_split(char* str, const char a_delim)
+{
+	char *a_str = strdup(str);
+    char** result    = 0;
+    size_t count     = 0;
+    char* tmp        = a_str;
+    char* last_comma = 0;
+    char delim[2];
+    delim[0] = a_delim;
+    delim[1] = 0;
+
+    while (*tmp)
+    {
+        if (a_delim == *tmp)
+        {
+            count++;
+            last_comma = tmp;
+        }
+        tmp++;
+    }
+
+    count += last_comma < (a_str + strlen(a_str) - 1);
+
+    count++;
+
+    result = malloc(sizeof(char*) * count);
+
+    if (result)
+    {
+        size_t idx  = 0;
+        char* token = strtok(a_str, delim);
+
+        while (token)
+        {
+            //assert(idx < count);
+            *(result + idx++) = strdup(token);
+            token = strtok(0, delim);
+        }
+        //assert(idx == count - 1);
+        *(result + idx) = 0;
+    }
+
+	free(a_str);
+    return result;
+}
+
+int str_index(char *str, char c) {
+
+    int i = 0;
+    while (str[i])
+        if (str[i++] == c)
+            return i;
+
+    return -1;
+}
+
+int number_of_element(char *str, char c) {
+	int nbr = 0;
+	for (int i = 0; str[i] != '\0'; i++)
+        if (str[i] == c)
+            nbr++;
+    return nbr;
+}
+
+long gmc(long a, long b) {
+    if (b == 0)
+        return a;
+    return gmc(b, a % b);
+}
+
+long lmc(long a, long b) {
+    return (a / gmc(a, b)) * b;
+}
+
+long lmcs(int array[], int n) {
+    long result = array[0];
+    for (int i = 1; i < n; i++)
+        result = lmc(result, array[i]);
+    return result;
+}
diff --git a/02/part1.c b/02/part1.c
new file mode 100644
index 0000000..4bb250c
--- /dev/null
+++ b/02/part1.c
@@ -0,0 +1,37 @@
+#include "_.h"
+
+int main(int argc, char **argv) {
+	
+	if (argc != 2)
+		return 1;
+
+	char *input = argv[1];
+	char **inputs = str_split(strdup(input), '\n');
+
+    int count_safe = 0;
+	for (int i = 0; inputs[i] != NULL; i++) {
+	    char **inputs_space = str_split(strdup(inputs[i]), ' ');
+        int is_safe = 1;
+        int increase = 0;
+        for (int j = 0; inputs_space[j + 1] != NULL; j++) {
+            int number = atoi(inputs_space[j]);
+            int next_number = atoi(inputs_space[j + 1]);
+
+            if (number - next_number > 0 && number - next_number < 4 && (increase == 1 || increase == 0)) {
+                increase = 1;
+            }
+            else if (number - next_number < 0 && number - next_number > -4 && (increase == -1 || increase == 0)) {
+                increase = -1;
+            }
+            else {
+                is_safe = 0;
+            }
+        }
+        if (is_safe == 1)
+            count_safe++;
+	}
+    
+    printf("safe: %d\n", count_safe);
+
+	return 0;
+}
diff --git a/02/part1.sh b/02/part1.sh
new file mode 100755
index 0000000..dad1d2d
--- /dev/null
+++ b/02/part1.sh
@@ -0,0 +1 @@
+gcc -g -Wall -Wextra -include_.h part1.c mylib.c
diff --git a/02/part2.c b/02/part2.c
new file mode 100644
index 0000000..15debcd
--- /dev/null
+++ b/02/part2.c
@@ -0,0 +1,57 @@
+#include "_.h"
+
+int main(int argc, char **argv) {
+	
+	if (argc != 2)
+		return 1;
+
+	char *input = argv[1];
+	char **inputs = str_split(strdup(input), '\n');
+
+    int count_safe = 0;
+	for (int i = 0; inputs[i] != NULL; i++) {
+	    char **inputs_space_first = str_split(strdup(inputs[i]), ' ');
+        int is_safe = 0;
+        for (int y = -1; inputs_space_first[y] != NULL; y++) {
+            if (is_safe == 1)
+                break;
+            int increase = 0;
+            is_safe = 1;
+	        char **inputs_space = str_split(strdup(inputs[i]), ' ');
+            if (y > -1)
+                inputs_space[y] = "-1";
+            for (int j = 0; inputs_space[j + 1] != NULL; j++) {
+                int number = atoi(inputs_space[j]);
+                int next_number = atoi(inputs_space[j + 1]);
+                if (number == -1) {
+                    if (inputs_space[j + 2] == NULL)
+                        break;
+                    number = atoi(inputs_space[j + 1]);
+                    next_number = atoi(inputs_space[j + 2]);
+                }
+                if (next_number == -1) {
+                    if (inputs_space[j + 2] == NULL)
+                        break;
+                    next_number = atoi(inputs_space[j + 2]);
+                }
+
+                if (number - next_number > 0 && number - next_number < 4 && (increase == 1 || increase == 0)) {
+                    increase = 1;
+                }
+                else if (number - next_number < 0 && number - next_number > -4 && (increase == -1 || increase == 0)) {
+                    increase = -1;
+                }
+                else {
+                    is_safe = 0;
+                    break;
+                }
+            }
+        }
+        if (is_safe == 1)
+            count_safe++;
+	}
+    
+    printf("safe: %d\n", count_safe);
+
+	return 0;
+}
diff --git a/02/part2.sh b/02/part2.sh
new file mode 100755
index 0000000..119f5ba
--- /dev/null
+++ b/02/part2.sh
@@ -0,0 +1 @@
+gcc -g -Wall -Wextra -include_.h part2.c mylib.c
diff --git a/02/test.txt b/02/test.txt
new file mode 100644
index 0000000..b49c10d
--- /dev/null
+++ b/02/test.txt
@@ -0,0 +1,6 @@
+7 6 4 2 1
+1 2 7 8 9
+9 7 6 2 1
+1 3 2 4 5
+8 6 4 4 1
+1 3 6 7 9
diff --git a/02/test2.txt b/02/test2.txt
new file mode 100644
index 0000000..6fefc97
--- /dev/null
+++ b/02/test2.txt
@@ -0,0 +1 @@
+35 37 38 41 43 41