编辑代码

function maxPQ() {
    let pq = []
    let len = 0

    let max = () => {
        if(len>1)
        return pq[1]
    }

    let exchange = (i, j) => {
        let temp = pq[i]
        pq[i] = pq[j]
        pq[j] = temp
    }

    let less = (i, j) => {
        return pq[i] < pq[j]
    }

    let insert = () => {

    }

    let delMax = () => {

    }

    let swim = (k) => {

    }

    let sink = (k) => {

    }
}