refactor(structure): normalize folder names with leading zeros for consistency

- Renamed all folders from format NEx (e.g., 1Ex, 2Ex...) to 0NEx (01Ex, 02Ex, etc.)
- Updated subdirectories and files accordingly
- Removed old main Makefile and tasks (a01.c–a09.c, solve.c, io_status.h), likely obsolete
- Cleaned up deprecated task binaries and configs

2025.02.14/08Ex/Linux/array.c

@@ -0,0 +1,115 @@
+#include "array.h"
+
+
+io_status process_s(const char* s, char* s1, char* s2, const size_t len_s)
+{
+    int i, j;
+    for (i = 0, j = 0; i < (int)len_s; ++i)
+    {
+        if (s[i] == '\\')
+        {
+            if (i + 1 == (int)len_s) return ERROR_PATTERN;
+            else
+            {
+                s1[j] = '0';
+                s2[j++] = s[++i];
+            }
+        }
+        else if ((s[i] == '+') && (j != 0))
+        {
+            s1[j - 1] = '1';
+        }
+        else
+        {
+            s1[j] = '0';
+            s2[j++] = s[i];
+        }
+    }
+
+    s2[j] = '\0';
+
+    return SUCCESS;
+}
+
+io_status process_file(const char* f_in, const char* f_out, const char* s1, const char* s2, int* r)
+{
+    FILE* fp = fopen(f_in, "r");
+    if (!fp) return ERROR_OPEN;
+    else
+    {
+        char buf[LEN] = {0};
+        size_t len_s = strlen(s2);
+        FILE* fw = fopen(f_out, "w");
+        int i;
+
+        if (!fw)
+        {
+            fclose(fp);
+            return ERROR_OPEN;
+        }
+        for (i = 0; fgets(buf, sizeof(buf), fp);)
+        {
+            size_t len_buf = strlen(buf);
+            bool is_approach;
+            if (buf[len_buf - 1] == '\n') buf[--len_buf] = '\0';
+            is_approach = start(buf, s1, s2, len_s, len_buf);
+
+            if (is_approach)
+            {
+                i++;
+                if (buf[len_buf - 1] == '\n') buf[len_buf - 1] = '\0';
+                fprintf(fw, "%s\n", buf);
+            }
+        }
+
+        *r = i;
+        fclose(fw);
+    }
+
+    fclose(fp);
+
+    return SUCCESS;
+}
+
+bool start(const char* buf, const char* s1, const char* s2, const size_t len_s, const size_t len_buf)
+{
+    size_t char_s = sizeof(char);
+    if (buf[0] == s2[0])
+    {
+        if (s1[0] == '1')
+        {
+            if (recursion(buf + char_s, s1, s2, len_s, len_buf - 1)) return true;
+        }
+        if (recursion(buf + char_s, s1 + char_s, s2 + char_s, len_s - 1, len_buf - 1)) return true;
+    }
+
+    return false;
+}
+
+bool recursion(const char* buf, const char* s1, const char* s2, const size_t len_s, const size_t len_buf)
+{
+    size_t char_s = sizeof(char);
+    if (len_s == 0) return true;
+    else if (len_buf == 0) return false;
+    else
+    {
+        int i;
+        for (i = 0; i < (int)len_buf; ++i)
+        {
+            if (buf[i] == s2[i])
+            {
+                if (s1[i] == '1')
+                {
+                    if (recursion(buf + (i + 1) * char_s, s1, s2, len_s, len_buf - 1)) return true;
+                }
+                if (i + 1 == (int)len_s) return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        return false;
+    }
+}