w3resource

Python: Find two indices making a given string unhappy

Python Programming Puzzles: Exercise-83 with Solution

A string is happy if every three consecutive characters are distinct. Write a Python program to find two indices making a given string unhappy.

Input: 
Python
Output:
None

Input: 
Unhappy
Output:
[4, 5]

Input:
Find
Output:
None

Input:
Street
Output:
[3, 4]

Pictorial Presentation:

Python: Find two indices making a given string unhappy.
Python: Find two indices making a given string unhappy.

Sample Solution:

Python Code:

#License: https://bit.ly/3oLErEI

def test(s):
    for i in range(len(s) - 2):
        if s[i] == s[i + 1]:
            return [i, i + 1]
        if s[i] == s[i + 2]:
            return [i, i + 2] 

strs = "Python"
print("Original string:",strs) 
print("Find two indices making the said string unhappy!")
print(test(strs))
strs = "Unhappy"
print("\nOriginal string:",strs) 
print("Find two indices making the said string unhappy!")
print(test(strs)) 
strs = "Find"
print("\nOriginal string:",strs) 
print("Find two indices making the said string unhappy!")
print(test(strs))
strs = "Street"
print("\nOriginal string:",strs) 
print("Find two indices making the said string unhappy!")
print(test(strs))

Sample Output:

Original string: Python
Find two indices making the said string unhappy!
None

Original string: Unhappy
Find two indices making the said string unhappy!
[4, 5]

Original string: Find
Find two indices making the said string unhappy!
None

Original string: Street
Find two indices making the said string unhappy!
[3, 4]

Flowchart:

Flowchart: Python - Find two indices making a given string unhappy.

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:


Python Code Editor :

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Find the sublist of numbers with only odd digits in increasing order.
Next: Find the index of the matching parentheses for each character in a given string.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Python: Tips of the Day

Clamps num within the inclusive range specified by the boundary values x and y:

Example:

def tips_clamp_num(num,x,y):
  return max(min(num, max(x, y)), min(x, y))
print(tips_clamp_num(2, 4, 6))
print(tips_clamp_num(1, -1, -6))

Output:

4
-1