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AhkunTa
Arithmetic
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LeetCode
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1046_javascript.js
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// 有一堆石头,每块石头的重量都是正整数。
// 每一回合,从中选出两块 最重的 石头,然后将它们一起粉碎。假设石头的重量分别为 x 和 y,且 x <= y。那么粉碎的可能结果如下:
// 如果 x == y,那么两块石头都会被完全粉碎;
// 如果 x != y,那么重量为 x 的石头将会完全粉碎,而重量为 y 的石头新重量为 y-x。
// 最后,最多只会剩下一块石头。返回此石头的重量。如果没有石头剩下,就返回 0。
// 示例:
// 输入:[2,7,4,1,8,1]
// 输出:1
// 解释:
// 先选出 7 和 8,得到 1,所以数组转换为 [2,4,1,1,1],
// 再选出 2 和 4,得到 2,所以数组转换为 [2,1,1,1],
// 接着是 2 和 1,得到 1,所以数组转换为 [1,1,1],
// 最后选出 1 和 1,得到 0,最终数组转换为 [1],这就是最后剩下那块石头的重量。
//
// 提示:
// 1 <= stones.length <= 30
// 1 <= stones[i] <= 1000
/**
* @param {number[]} stones
* @return {number}
*/
var lastStoneWeight = function(stones) {
while(stones.length >1){
stones.sort((a,b)=> b-a)
if(stones[0] !== stones[1]){
stones.push( Math.abs(stones[1] - stones[0]))
}
stones.splice(0,2);
}
return stones[0] || 0;
};
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