Create 6. Zigzag Conversion

Author: pratham1singh

6. Zigzag Conversion

@@ -0,0 +1,23 @@
+def convert(self, s, r):
+        if r==1:
+            return s
+        list1=[[] for i in range(r)]
+        c=0
+        w=1
+        ans=""
+        for i in s:
+
+            list1[c].append(i)
+            if w==1:
+                c+=1
+            else:
+                c-=1
+            if c==r:
+                w=w*-1
+                c=r-2
+            elif c==-1:
+                w=w*-1
+                c=c+2
+        for i in list1:
+            ans+="".join(i)
+        return ans