<?php
$heap = new SplMaxHeap(); # Ascending order
$heap->insert('E');
$heap->insert('B');
$heap->insert('D');
$heap->insert('A');
$heap->insert('C');
echo $heap->extract(), PHP_EOL; # E
echo $heap->extract(), PHP_EOL; # D
$heap = new SplMinHeap(); # Descending order
$heap->insert('E');
$heap->insert('B');
$heap->insert('D');
$heap->insert('A');
$heap->insert('C');
print PHP_EOL;
echo $heap->extract(), PHP_EOL; # A
echo $heap->extract(), PHP_EOL; # B
?>
SplHeap::extract
(PHP 5 >= 5.3.0, PHP 7)
SplHeap::extract — Extracts a node from top of the heap and sift up.
설명
인수
이 함수는 인수가 없습니다.
반환값
The value of the extracted node.
오류/예외
Throws RuntimeException when the data-structure is empty.
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User Contributed Notes 1 note
Sandro Alves Peres ¶
11 years ago
