What is kth in python?
Given a List, extract Kth occurrence of Even Element. Show
Method #1 : Using list comprehension In this, we extract list of even elements using % operator and use list index access to get Kth even element. Python3
Output The original list is : [4, 6, 2, 3, 8, 9, 10, 11] The Kth Even Number : 10 Method #2 : Using filter() + lambda In this, task of finding even elements is done using filter() + lambda function. Python3
Output The original list is : [4, 6, 2, 3, 8, 9, 10, 11] The Kth Even Number : 10 Sometimes, while working with Python, we can have a problem in which we need to perform the pairing of each character with every other in String. This can have application in many domains including web development and day-day. Lets discuss certain ways in which this task can be performed. Method #1 : Using loop This task can be performed using loop. This a brute force manner in which this task can be performed. In this, we iterate each character and append the Kth letter to each and construct a list. Python3
Output : The original string is : geeksforgeeks List after pairing : ['sg', 'se', 'se', 'sk', 'ss', 'sf', 'so', 'sr', 'sg', 'se', 'se', 'sk', 'ss'] Method #2 : Using join() + zip() + cycle() The combination of above functions can be used to perform this task. In this, we perform the task of joining using join(). The task of pairing with all is done with zip() + cycle(). Python3
Output : The original string is : geeksforgeeks List after pairing : ['sg', 'se', 'se', 'sk', 'ss', 'sf', 'so', 'sr', 'sg', 'se', 'se', 'sk', 'ss'] The Time and Space Complexity for all the methods are the same: Time Complexity: O(nlogn) Auxiliary Space: O(n) How do you find the kth largest element in a list?Line 1: We declare a list, arr , and initialize it with elements. Line 4: We use the sorted function to sort the elements of arr in descending order. Lines 7–8: We declare a variable, k , and initialize it with a value of 3 . Next, we print the third largest element of arr by retrieving the element at index k-1 .
How do you find the kth largest element in an array in Python?Suppose we have an unsorted array, we have to find the kth largest element from that array. So if the array is [3,2,1,5,6,4] and k = 2, then the result will be 5. We will sort the element, if the k is 1, then return last element, otherwise return array[n – k], where n is the size of the array.
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