Given two lists 
and 
, check if they follow the same pattern or not.
Condition for pattern matching:
> 
, then 
> 
- = , then =
- < , then < ,
for all i, j.
> 
, then 
> 
Example:
Input:
2 17 100
10 20 50Output:
YESInput:
5 7 10 33
10 50 10 45Output:
NO
Approach:
To check if two lists follow the above pattern. Sort both lists and find the index of previous list element in the sorted list. If indices match, then pattern matched otherwise no pattern matched.
Code : Python program for checking the pattern.
# python program for above approach a = [5, 7, 10, 33] b = [10, 50, 10, 45] aa = a.copy() bb = b.copy() # sorting the list aa.sort() bb.sort() for i in range(len(a)-1): # checking the index are same or not if aa[i] < aa[i + 1] and bb[i] < bb[i + 1]: if a.index(aa[i])== b.index(bb[i]) and a.index(aa[i + 1]) == b.index(bb[i + 1]): flag ="YES" else: flag ="NO" break elif aa[i] == aa[i + 1] and bb[i] == bb[i + 1]: if a.index(aa[i]) == b.index(bb[i]) and a.index(aa[i + 1]) == b.index(bb[i + 1]): flag = "YES" else: flag = "NO" break else: flag = "NO" break print(flag) |
Output :
NO