Update app.py

app.py

@@ -72,9 +72,13 @@ def search_pattern(fulltext, pattern, method):
         start = time.time()
         occurrence = 0
         for i in range(0,len(fulltext)-len(pattern)+1):
-          if fulltext[i:i+len(pattern)] == pattern:
-            print("Found ", fulltext[i:i+len(pattern)], ' locating at position ', i+1)
-            occurrence += 1
+          found = 1
+          for l in range(len(pattern)):
+             if fulltext[i+l] != pattern[l]:
+                 found = 0
+          if found:   
+             occurrence += 1
+             print("Found ", fulltext[i:i+len(pattern)], ' locating at position ', i+1)
         
         end = time.time()
         time_elapse = end - start