w3resource

Python: Check whether it follows the sequence given in the patterns array

Python: Array Exercise-16 with Solution

Write a Python program to check whether it follows the sequence given in the patterns array.

Pattern example:
For color1 = ["red", "green", "green"] and patterns = ["a", "b", "b"]
the output should be samePatterns(color1, patterns) = true;
For color2 = ["red", "green", "greenn"] and patterns = ["a", "b", "b"]
the output should be samePatterns (strings, color2) = false.

Sample Solution:

Python Code :

def is_samePatterns(colors, patterns):    
    if len(colors) != len(patterns):
        return False    
    sdict = {}
    pset = set()
    sset = set()    
    for i in range(len(patterns)):
        pset.add(patterns[i])
        sset.add(colors[i])
        if patterns[i] not in sdict.keys():
            sdict[patterns[i]] = []

        keys = sdict[patterns[i]]
        keys.append(colors[i])
        sdict[patterns[i]] = keys

    if len(pset) != len(sset):
        return False   

    for values in sdict.values():

        for i in range(len(values) - 1):
            if values[i] != values[i+1]:
                return False

    return True

print(is_samePatterns(["red", 
 "green", 
 "green"], ["a", 
 "b", 
 "b"])) 

print(is_samePatterns(["red", 
 "green", 
 "greenn"], ["a", 
 "b", 
 "b"])) 

Sample Output:

True
False

Python Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a Python program to find the first duplicate element in a given array of integers. Return -1 If there are no such elements.
Next: Write a Python program to find a pair with highest product from a given array of integers.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Become a Patron!

Follow us on Facebook and Twitter for latest update.

It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.

https://w3resource.com/python-exercises/array/python-array-exercise-16.php