在JavaScript中按多维数组排序
假设我们有以下数组数组-
const arr = [ ["A","F","A","H","F","F"], ["F","A","A","F","F","H"] ];
我们需要编写一个包含一个这样的数组的JavaScript函数。
该函数应该根据这些规则在内部对给定数组的所有子数组进行排序-
如果元素不是“A”或“F”，则应保持其位置
如果元素是“A”或“F”之一，则应按字母顺序排序
因此，上述数组的最终输出应类似于-
const output = [ ["A","A","A","H","A","F"], ["F","F","F","F","F","H"] ];
请注意，如果排序算法使子数组中的元素这样做，则它们可以更改其数组。
示例
const arr = [
["A","F","A","H","F","F"],
["F","A","A","F","F","H"]
];
const customSort = (arr = []) => {
const order = [].concat(...arr.slice()),
res = []; order.forEach((el, ind) => {
if (el === 'A') {
const fIndex = order.indexOf('F');
if (fIndex < ind){
order[fIndex] = 'A'; order[ind] = 'F';
};
};
})
arr.forEach(el => res.push(order.splice(0, el.length)))
return res;
}
console.log(customSort(arr));输出结果
控制台中的输出将是-
[ [ 'A', 'A', 'A', 'H', 'A', 'F' ], [ 'F', 'F', 'F', 'F', 'F', 'H' ] ]