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Update 0347.前K个高频元素.md

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1. 修复了 JavaScript 解法二，堆 pop 方法无法处理数组长度 <= 1 的边界情况的问题
2. 删除了有误导性的条件判断。事实上，被删除的表达式永远为真（searchChild !== undefined)。原作者想表达的意思可能是 this.queue[searchChild] !== undefined，而实际上，这个判断也是不必要的，这种情况会被后续的 this.compare(index, searchChild) > 0 判断排除。但鉴于本项目的教程性质，直接去除可能会导致语义不清，考虑酌情将原处替换为 this.queue[searchChild] !== undefined 或直接删除
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2024-04-26 19:45:18 +08:00
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problems/0347.前K个高频元素.md
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@ -421,7 +421,7 @@ class Heap {
let left = 1; // left 是左子节点下标 left + 1 则是右子节点下标
let searchChild = this.compare(left, left + 1) > 0 ? left + 1 : left;
while (searchChild !== undefined && this.compare(index, searchChild) > 0) { // 注意compare参数顺序
while (this.compare(index, searchChild) > 0) { // 注意compare参数顺序
[this.queue[index], this.queue[searchChild]] = [this.queue[searchChild], this.queue[index]];
// 更新下标