模板:
//外层循环扩展右边界,内层循环扩展左边界
for (int l 0, r 0 ; r < n ; r) {//当前考虑的元素while (l < r && check()) {//区间[left,right]不符合题意//扩展左边界}//区间[left,right]符合题意,统计相关信息
}
无…
矩阵上的掩码运算
Mask operations on matrices are quite simple. The idea is that we recalculate each pixel’s value in an image according to a mask matrix (also known as kernel). This mask holds values that will adjust how much influence neighboring pixels…