Top Problems on Sliding Window Technique for Interviews Last Updated : 16 May, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report The Sliding Window Technique is a powerful algorithmic approach used to solve problems involving arrays or lists where a subarray or subsequence is required to be analyzed. This technique allows you to reduce the time complexity of problems that would typically involve nested loops, by maintaining a "window" of elements and sliding it across the array. The window can either expand or shrink based on certain conditions, which helps in optimizing the solution.Easy ProblemsMaximum sum of a subarray of size kSmallest window containing 0, 1 and 2Check if Permutation of Pattern is SubstringCount Strictly Increasing Subarrays Remove Consecutive CharactersMaximum sum of subarray <= xMedium ProblemsLongest substring with distinct characters Substrings with K Distinct Maximum Fruits in Two BasketsSubstrings of length k with k-1 distinct elementsMinimum Removals for Target SumLongest Repeating Character ReplacementBinary subarray with sumSubarrays Product Less than KCount Occurrences of AnagramsLargest sum subarray of size at least kCount Distinct Elements In Every Window of Size K Subarray with given sum First negative integer in every window of size k Longest Subarray With Sum KSmallest window that contains all characters of string itself Smallest window in a String containing all characters of other String Equivalent Sub-Arrays Hard ProblemsMaximum of minimum for every window sizeLongest Substring with K UniquesMinimum Window Substring Largest sum subarray with at-least k numbers Comment More infoAdvertise with us Next Article Top Problems on Sliding Window Technique for Interviews U ujjwalroq0 Follow Improve Article Tags : DSA sliding-window Practice Tags : sliding-window Similar Reads DSA Tutorial - Learn Data Structures and Algorithms DSA (Data Structures and Algorithms) is the study of organizing data efficiently using data structures like arrays, stacks, and trees, paired with step-by-step procedures (or algorithms) to solve problems effectively. Data structures manage how data is stored and accessed, while algorithms focus on 7 min read Quick Sort QuickSort is a sorting algorithm based on the Divide and Conquer that picks an element as a pivot and partitions the given array around the picked pivot by placing the pivot in its correct position in the sorted array. It works on the principle of divide and conquer, breaking down the problem into s 12 min read Merge Sort - Data Structure and Algorithms Tutorials Merge sort is a popular sorting algorithm known for its efficiency and stability. It follows the divide-and-conquer approach. It works by recursively dividing the input array into two halves, recursively sorting the two halves and finally merging them back together to obtain the sorted array. Merge 14 min read Data Structures Tutorial Data structures are the fundamental building blocks of computer programming. They define how data is organized, stored, and manipulated within a program. Understanding data structures is very important for developing efficient and effective algorithms. What is Data Structure?A data structure is a st 2 min read Bubble Sort Algorithm Bubble Sort is the simplest sorting algorithm that works by repeatedly swapping the adjacent elements if they are in the wrong order. This algorithm is not suitable for large data sets as its average and worst-case time complexity are quite high.We sort the array using multiple passes. After the fir 8 min read Breadth First Search or BFS for a Graph Given a undirected graph represented by an adjacency list adj, where each adj[i] represents the list of vertices connected to vertex i. Perform a Breadth First Search (BFS) traversal starting from vertex 0, visiting vertices from left to right according to the adjacency list, and return a list conta 15+ min read Binary Search Algorithm - Iterative and Recursive Implementation Binary Search Algorithm is a searching algorithm used in a sorted array by repeatedly dividing the search interval in half. The idea of binary search is to use the information that the array is sorted and reduce the time complexity to O(log N). Binary Search AlgorithmConditions to apply Binary Searc 15 min read Insertion Sort Algorithm Insertion sort is a simple sorting algorithm that works by iteratively inserting each element of an unsorted list into its correct position in a sorted portion of the list. It is like sorting playing cards in your hands. You split the cards into two groups: the sorted cards and the unsorted cards. T 9 min read Array Data Structure Guide In this article, we introduce array, implementation in different popular languages, its basic operations and commonly seen problems / interview questions. An array stores items (in case of C/C++ and Java Primitive Arrays) or their references (in case of Python, JS, Java Non-Primitive) at contiguous 4 min read Sorting Algorithms A Sorting Algorithm is used to rearrange a given array or list of elements in an order. For example, a given array [10, 20, 5, 2] becomes [2, 5, 10, 20] after sorting in increasing order and becomes [20, 10, 5, 2] after sorting in decreasing order. There exist different sorting algorithms for differ 3 min read Like