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"title" : "Where Will the Ball Fall" ,
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"content" : "<p>You have a 2-D <code>grid</code> of size <code>m x n</code> representing a box, and you have <code>n</code> balls. The box is open on the top and bottom sides.</p>\n\n<p>Each cell in the box has a diagonal board spanning two corners of the cell that can redirect a ball to the right or to the left.</p>\n\n<ul>\n\t<li>A board that redirects the ball to the right spans the top-left corner to the bottom-right corner and is represented in the grid as <code>1</code>.</li>\n\t<li>A board that redirects the ball to the left spans the top-right corner to the bottom-left corner and is represented in the grid as <code>-1</code>.</li>\n</ul>\n\n<p>We drop one ball at the top of each column of the box. Each ball can get stuck in the box or fall out of the bottom. A ball gets stuck if it hits a "V" shaped pattern between two boards or if a board redirects the ball into either wall of the box.</p>\n\n<p>Return <em>an array </em><code>answer</code><em> of size </em><code>n</code><em> where </em><code>answer[i]</code><em> is the column that the ball falls out of at the bottom after dropping the ball from the </em><code>i<sup>th</sup></code><em> column at the top, or <code>-1</code><em> if the ball gets stuck in the box</em>.</em></p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2019/09/26/ball.jpg\" style=\"width: 500px; height: 385px;\" /></strong></p>\n\n<pre>\n<strong>Input:</strong> grid = [[1,1,1,-1,-1],[1,1,1,-1,-1],[-1,-1,-1,1,1],[1,1,1,1,-1],[-1,-1,-1,-1,-1]]\n<strong>Output:</strong> [1,-1,-1,-1,-1]\n<strong>Explanation:</strong> This example is shown in the photo.\nBall b0 is dropped at column 0 and falls out of the box at column 1.\nBall b1 is dropped at column 1 and will get stuck in the box between column 2 and 3 and row 1.\nBall b2 is dropped at column 2 and will get stuck on the box between column 2 and 3 and row 0.\nBall b3 is dropped at column 3 and will get stuck on the box between column 2 and 3 and row 0.\nBall b4 is dropped at column 4 and will get stuck on the box between column 2 and 3 and row 1.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> grid = [[-1]]\n<strong>Output:</strong> [-1]\n<strong>Explanation:</strong> The ball gets stuck against the left wall.\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> grid = [[1,1,1,1,1,1],[-1,-1,-1,-1,-1,-1],[1,1,1,1,1,1],[-1,-1,-1,-1,-1,-1]]\n<strong>Output:</strong> [0,1,2,3,4,-1]\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>m == grid.length</code></li>\n\t<li><code>n == grid[i].length</code></li>\n\t<li><code>1 <= m, n <= 100</code></li>\n\t<li><code>grid[i][j]</code> is <code>1</code> or <code>-1</code>.</li>\n</ul>\n" ,
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"translatedTitle" : "球会落何处" ,
"translatedContent" : "<p>用一个大小为 <code>m x n</code> 的二维网格 <code>grid</code> 表示一个箱子。你有 <code>n</code> 颗球。箱子的顶部和底部都是开着的。</p>\n\n<p>箱子中的每个单元格都有一个对角线挡板，跨过单元格的两个角，可以将球导向左侧或者右侧。</p>\n\n<ul>\n\t<li>将球导向右侧的挡板跨过左上角和右下角，在网格中用 <code>1</code> 表示。</li>\n\t<li>将球导向左侧的挡板跨过右上角和左下角，在网格中用 <code>-1</code> 表示。</li>\n</ul>\n\n<p>在箱子每一列的顶端各放一颗球。每颗球都可能卡在箱子里或从底部掉出来。如果球恰好卡在两块挡板之间的 \"V\" 形图案，或者被一块挡导向到箱子的任意一侧边上，就会卡住。</p>\n\n<p>返回一个大小为 <code>n</code> 的数组 <code>answer</code> ，其中 <code>answer[i]</code> 是球放在顶部的第 <code>i</code> 列后从底部掉出来的那一列对应的下标，如果球卡在盒子里，则返回 <code>-1</code> 。</p>\n\n<p> ： ： ： ,
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o f - b o u n d s < \ \ / c o d e > \ \ u 5 4 8 c < c o d e > u s e - a f t e r - f r e e < \ \ / c o d e > \ \ u 9 5 1 9 \ \ u 8 b e f \ \ u 3 0 0 2 < \ \ / p > \ \ r \ \ n \ \ r \ \ n < p > \ \ u 4 e 3 a \ \ u 4 e 8 6 \ \ u 4 f 7 f \ \ u 7 5 2 8 \ \ u 6 5 b 9 \ \ u 4 f b f \ \ u f f 0 c \ \ u 5 9 2 7 \ \ u 9 0 e 8 \ \ u 5 2 0 6 \ \ u 6 8 0 7 \ \ u 5 1 c 6 \ \ u 5 e 9 3 \ \ u 7 6 8 4 \ \ u 5 9 3 4 \ \ u 6 5 8 7 \ \ u 4 e f 6 \ \ u 5 d f 2 \ \ u 7 e c f \ \ u 8 8 a b \ \ u 8 1 e a \ \ u 5 2 a 8 \ \ u 5 b f c \ \ u 5 1 6 5 \ \ u 3 0 0 2 < \ \ / p > \ \ r \ \ n \ \ r \ \ n < p > \ \ u 5 9 8 2 \ \ u 6 0 f 3 \ \ u 4 f 7 f \ \ u 7 5 2 8 \ \ u 5 4 c 8 \ \ u 5 e 0 c \ \ u 8 8 6 8 \ \ u 8 f d 0 \ \ u 7 b 9 7 , \ \ u 6 0 a 8 \ \ u 5 3 e f \ \ u 4 e e 5 \ \ u 4 f 7 f \ \ u 7 5 2 8 < a h r e f = \ \ \ " h t t p s : \ \ / \ \ / t r o y d h a n s o n . g i t h u b . i o \ \ / u t h a s h \ \ / \ \ \ " t a r g e t = \ \ \ " _ b l a n k \ \ \ " > u t h a s h < \ \ / a > \ \ u 3 0 0 2 \ \ \ " u t h a s h . h \ \ \ " \ \ u 5 d f 2 \ \ u 7 e c f \ \ u 9 e d 8 \ \ u 8 b a 4 \ \ u 8 8 a b \ \ u 5 b f c \ \ u 5 1 6 5 \ \ u 3 0 0 2 \ \ u 8 b f 7 \ \ u 7 7 0 b \ \ u 5 9 8 2 \ \ u 4 e 0 b \ \ u 7 9 3 a \ \ u 4 f 8 b : < \ \ / p > \ \ r \ \ n \ \ r \ \ n < p > < b > 1 . \ \ u 5 f 8 0 \ \ u 5 4 c 8 \ \ u 5 e 0 c \ \ u 8 8 6 8 \ \ u 4 e 2 d \ \ u 6 d f b \ \ u 5 2 a 0 \ \ u 4 e 0 0 \ \ u 4 e 2 a \ \ u 5 b f 9 \ \ u 8 c 6 1 \ \ u f f 1 a < \ \ / b > \ \ r \ \ n < p r e > \ \ r \ \ n s t r u c t h a s h _ e n t r y { \ \ r \ \ n i n t i d ; \ \ / * w e ' l l u s e t h i s f i e l d a s t h e k e y * \ \ / \ \ r \ \ n c h a r n a m e [ 1 0 ] ; \ \ r \ \ n U T _ h a s h _ h a n d l e h h ; \ \ / * m a k e s t h i s s t r u c t u r e h a s h a b l e * \ \ / \ \ r \ \ n } ; \ \ r \ \ n \ \ r \ \ n s t r u c t h a s h _ e n t r y * u s e r s = N U L L ; \ \ r \ \ n \ \ r \ \ n v o i d a d d _ u s e r ( s t r u c t h a s h _ e n t r y * s ) { \ \ r \ \ n H A S H _ A D D _ I N T ( u s e r s , i d , s ) ; \ \ r \ \ n } \ \ r \ \ n < \ \ / p r e > \ \ r \ \ n < \ \ / p > \ \ r \ \ n \ \ r \ \ n < p > < b > 2 . \ \ u 5728 \ \ u 54 c 8 \ \ u 5e0 c \ \ u 8868 \ \ u 4e2 d \ \ u 67e5 \ \ u 627 e \ \ u 4e00 \ \ u 4e2 a \ \ u 5 b f 9 \ \ u 8 c 61 \ \ u f f 1 a < \ \ / b > \ \ r \ \ n < p r e > \ \ r \ \ n s t r u c t h a s h _ e n t r y * f i n d _ u s e r ( i n t u s e r _ i d ) { \ \ r \ \ n s t r u c t h a s h _ e n t r y * s ; \ \ r \ \ n H A S H _ F I N D _ I N T ( u s e r s , & u s e r _ i d , s ) ; \ \ r \ \ n r e
2022-03-27 20:37:52 +08:00
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