Sliding Window Technique and Spiral Matrix Generation
Minimum Size Subarray Sum
Given an array of positive integers nums and a positive integer target, find the minimal length of a contiguous subarray whose sum is greater than or equal to target. If no such subarray exists, return 0.
Examples:
Input: target = 7, nums = [2,3,1,2,4,3]Output: 2Explanation: The subarray [4,3] has the minimal lengt ...
Posted on Tue, 16 Jun 2026 17:11:50 +0000 by kusarigama
LeetCode 54: Spiral Matrix and 445: Add Two Numbers II
LeetCode 54: Spiral Matrix
Problem
Given an m x n matrix, return all elements of the matrix in spiral order.
Example 1
Input: matrix = [[1,2,3],[4,5,6],[7,8,9]]
Output: [1,2,3,6,9,8,7,4,5]
Example 2
Input: matrix = [[1,2,3,4],[5,6,7,8],[9,10,11,12]]
Output: [1,2,3,4,8,12,11,10,9,5,6,7]
Approach
Traverse from left to right along the top r ...
Posted on Sun, 14 Jun 2026 16:12:36 +0000 by thebusinesslad