/** * @param {number[]} prices * @return {number} */var maxProfit = function(prices) {    let array = [];    for(let i = 0; i < prices.length; ++i){        array.push({            ind: i,            val: prices[i]        });    }    array.sort((a, b) => b.val - a.val);    let max = 0;    for(let i = 0; i < array.length; ++i){        for(let j = array.length - 1; j > i; --j){            let obji = array[i];            let objj = array[j];            if(obji.ind > objj.ind){                let tmp = obji.val - objj.val;                if(tmp > max){                    max = tmp;                }            }        }    }    return max;};复制代码