rajendraprasad9 · June 3, 2020 15:34 · May 12, 2018 · May 12, 2018
diff --git a/gistfile1.txt → gistfile1.py b/gistfile1.txt → gistfile1.py
diff --git a/gistfile1.txt b/gistfile1.txt
@@ -0,0 +1,41 @@
+# coding=utf-8
+import copy
+
+op_method = ['+', '-', '*', '/']
+
+
+def copy_arr(old, e):
+    new_buf = copy.copy(old)
+    new_buf.append(e)
+    return new_buf
+
+
+def check_val(buf):
+    code_val = ''
+    for i in buf:
+        code_val += str(i)
+
+    if eval(code_val) == 24:
+        print code_val
+
+
+def get_num(buf):
+    if len(buf) < 7:
+        if len(buf) != 0 and (len(buf) - 1) % 2 == 0:
+            for i in op_method:
+                get_num(copy_arr(buf, i))
+        else:
+            for i in range(0, 9):
+                if i in buf:
+                    continue
+                if len(buf) != 0 and buf[len(buf) - 1] is '/':
+                    before_val = buf[len(buf) - 2]
+                    if i == 0 or before_val % i != 0:
+                        continue
+                get_num(copy_arr(buf, i))
+    else:
+        check_val(buf)
+
+
+if __name__ == '__main__':
+    get_num([])
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