Migrated from private repo

pattern/pattern.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+
+int isMatch(char *pattern, char *string) {
+    if (*pattern == '\0') {
+        return (*string == '\0');
+    }
+    if (pattern[1] == '?') {
+        return (pattern[0] == string[0] && isMatch(pattern + 2, string + 1)) //Call 1
+               || isMatch(pattern + 2, string); //Call 2
+    }
+    return pattern[0] == string[0] && isMatch(pattern + 1, string + 1); //Call 3
+}
+
+
+int main(int argc, char *argv[]) {
+    char pattern[30], string[30];
+    scanf("%s %s", pattern, string);
+    if (isMatch(pattern, string) == 0) {
+        printf("NO ");
+    }
+    printf("MATCH\n");
+    return 0;
+}

pattern/pattern.py

@@ -0,0 +1,37 @@
+from manim import *
+
+# This one does not work, as I decided that it would be better to do it the old-fashioned way.
+# What does that mean?
+# 67 slides for the same problem
+
+PATTERN = "PF-is-?n?o?t?-bad"
+STRING = "PF-is-bad"
+
+class patternMatching(Scene):
+  def construct(self):
+    # Show inputs on top
+    pattern = Text(PATTERN, font_size=24)
+    string = Text(STRING, font_size=24)
+    pattern.to_edge(UP)
+    string.next_to(pattern, DOWN)
+    self.patterns = VGroup(pattern, string)
+    # Write the initial function call
+    self.play(Write(self.patterns))
+    self.wait(2)
+    self.results = []
+    self.is_match(PATTERN, STRING)
+  
+  
+
+  def is_match(self, pattern, string):
+    self.results.append(Text(f"{pattern}, {string}", font_size=24).to_edge(UP))
+    # Base case: If either the pattern or string is empty
+    if not pattern:
+        return self.callback()
+
+    # If the pattern is not empty but the string is
+    if len(pattern) > 1 and pattern[1] == '?':
+        return (pattern[0] == string[0] and self.is_match(pattern[2:], string[1:])) or self.is_match(pattern[2:], string)
+    0
+    # If the pattern is not empty and the string is not empty
+    return pattern[0] == string[0] and self.is_match(pattern[1:], string[1:])