Given a picture consisting of black and white pixels, find the number of black lonely pixels. The picture is represented by a 2D char array ...
Given a picture consisting of black and white pixels, and a positive integer N, find the number of black pixels located at some specific row R and column C that align with all the following rules: Ro ...
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Given a picture consisting of black and white pixels, find the number of black lonely pixels. The picture is represented by a 2D char array ...
A message containing letters from A-Z is being encoded to numbers using the following mapping way ...
Given two integers n and k, you need to construct a list which contains n different positive i ...
Given an unsorted array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3] ...
There is a ball in a maze with empty spaces and walls. The ball can go through empty spaces by ro ...
亚像素Sub Pixel 评估图像处理算法时,通常会考虑是否具有亚像素精度。 亚像素概念的引出: 图像处理过程中,提高检测方法的精度一般有两种方式:一种是提高图像系统的光学放大倍数和CCD相机的分辨率能力;另一种是引入亚像素细分技术来弥补硬件的不足以提高图像系统的分辨率。 如使用 ...
We are given a list of (axis-aligned) `rectangles`. Each `rectangle[i] = [x1, y1, x2, y2] `, where ...
Given an integer array of size n, find all elements that appear more than ⌊ n/3 ⌋ times. Note: T ...