💡 Problem Formulation: Given an unsorted list, the challenge is to determine the least number of consecutive sublists that can be independently sorted to make the entire list sorted. For example, given [3, 2, 4, 1, 5], the desired output is 3 because the list can be partitioned into sublists [3, 2], [4], [1, 5], … Read more
💡 Problem Formulation: Palindromes are strings that read the same forwards and backward. The challenge here is to find the number of ways a given palindrome can be split into two or more palindromes. For example, the input ‘ababa’ can be split into ‘a’, ‘bab’, ‘a’, or ‘aba’, ‘ba’, ‘aba’. The output for this input … Read more
💡 Problem Formulation: The task is to write a Python program that can generate all possible strings based on a set of characters at each position. For example, given input [[‘a’,’b’], [‘c’,’d’]], the desired output would be [‘ac’, ‘ad’, ‘bc’, ‘bd’]. Method 1: Itertools Product This method involves using the product() function from the Python … Read more
💡 Problem Formulation: We are tasked with determining the lowest maximum value of an array after performing exactly ‘k’ operations. Each operation consists of incrementing any element of the array by one. For example, given an array [3, 1, 5] and k=4, we aim to find the smallest possible largest number in the array after … Read more
💡 Problem Formulation: In binary tree processing, it is often required to find nodes at a specific depth. A particular challenge is to find the second deepest node, that is, the node one level above the deepest leaf nodes. Given a binary tree, for example: the second deepest nodes are b and c. The aim … Read more
💡 Problem Formulation: Given a binary tree, the goal is to write a Python program that can find the number of nodes that are the only child of their parents. An “only child” in this context is a node that has a parent but no siblings. For example, in a binary tree where node ‘A’ … Read more
💡 Problem Formulation: Given a collection of tasks with assigned durations, the challenge is to compute the minimum time required to complete all tasks, assuming they can be operated in parallel across multiple threads or processors. For instance, given the tasks [5, 2, 1], with the ability to run all tasks concurrently, the minimum completion … Read more
💡 Problem Formulation: In binary trees, leaves are nodes with no children. Sometimes, it’s necessary to verify whether two binary trees have the same leaf sequences without reconstructing the trees. This article explores how to address this in Python, with a focus on checking the equality of leaf sequences by traversing each tree only once. … Read more
💡 Problem Formulation: Imagine you have a string where words are separated by various delimiters, such as commas, semicolons, or spaces. The challenge is to reverse the order of the words without altering the delimiters’ positions. For example, given the input “hello,world;this is a test”, the desired output would be “test,a is this;world,hello”. Method 1: … Read more
💡 Problem Formulation: Linked lists are a fundamental data structure in computer science. A common challenge is reversing part of a linked list, specifically the inner nodes, excluding the first and last nodes. For instance, given a linked list 1 -> 2 -> 3 -> 4 -> 5, reversing the inner nodes would yield 1 … Read more
💡 Problem Formulation: The objective is to determine whether it is possible to modify elements in a Python list by adding their current values to their indices such that we achieve a specified target sum. For instance, given a list [1, 2, 3] and a target sum of 6, we need to check whether we … Read more
Delete Consecutive Duplicate Characters in Python 💡 Problem Formulation: We are presented with the task of processing a string to eliminate any group of consecutive duplicate characters when the group’s size is exactly k. For instance, given the input string “aabbcccb” and k=3, the desired output would be “aabb” after removing the three consecutive ‘c’ … Read more