You can use the function below to check a character repetition. It returns True if there is no repetition of character and returns False otherwise. Python Code

Jan 15, 2025 · We can check if the string is a repetition of a substring by slicing and reconstructing the string using multiplication. We concatenate the string with itself to allow rotation-based checks. We remove the first and last characters of the concatenated string.

If I've got an array of strings, can I check to see if a string is in the array without doing a for loop? Specifically, I'm looking for a way to do it within an if statement, so something like this: if [check that item is in array]:

Dec 17, 2009 · In Python 2.7, you can accomplish this with one line: tmp = list(set(list_a)) Comparing the lengths of tmp and list_a at this point should clarify if there were indeed duplicate items in list_a. This may help simplify things if you want …

Dec 19, 2024 · Given a sorted and rotated array arr[] and a key, the task is to find whether key exists in the rotated array (with duplicates). Examples: Input: arr[] = [3, 3, 3, 1, 2, 3], key = 3 Output: trueExplanation: arr[0] = 3 Input: arr[] = {3, 3, 3, 1, 2, 3}, key = 11 Output: falseExplanation: 11 is not pr

Nov 20, 2024 · In this article, we will explore various methods to find all duplicate characters in string. The simplest approach is by using a loop with dictionary. We can use a for loop to find duplicate characters efficiently. First we count the occurrences of each character by iterating through the string and updating a dictionary.

Mar 10, 2024 · Method 1: Naïve String Manipulation. Easily understandable and no libraries required. Might not be the most efficient for very large strings. Method 2: Regular Expressions. Compact and robust for pattern matching. Potentially less performant for very simple cases or extremely large strings due to the overhead of the regex engine.

Explore Python packages and tools that ease identifying repeated strings to expand your skills. Counter, pandas, and nltk are common choices. Programmers and data analysts need to find repetitive strings.

In this article, we are going to find out how can we tell if a string repeats itself in Python. The first approach is by using slicing and find() . We want to see if the string we have is made up entirely of repeats of a substring of the string.

Jul 18, 2012 · import numpy as np A = np.array([1,2,3,4,4,4,5,6,6,7,8]) # Record the indices where each unique element occurs. list_of_dup_inds = [np.where(a == A)[0] for a in np.unique(A)] # Filter out non-duplicates. list_of_dup_inds = filter(lambda inds: len(inds) > 1, list_of_dup_inds) for inds in list_of_dup_inds: print inds, A[inds] # >> [3 4 5] [4 4 4 ...