我的1314
又到了這個時候，又一年正式過去了，是時候寫點什么了。 先簡述一下我的整個2013吧，從寒假開始，那時回去剛買電腦，稀奇的不得了，於是玩了一個寒假的電腦，帶回去的書也有一大半沒看，真是 ...
原文：【leetcode】1314. Matrix Block Sum
題目如下： Given am nmatrixmatand an integerK, return a matrixanswerwhere eachanswer i j is the sum of all elementsmat r c fori K lt r lt i K, j K lt c lt j K, and r, c is a valid position in the matrix. E ...
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