矩阵置零

function setZeroes(matrix) {
    let x = [],y = []
    for(let i = 0;i < matrix.length;i++){
        let item = matrix[i]
        for(let j = 0;j < item.length;j++){
            let jItem = item[j]
            if(jItem == 0){
                x.push(i)
                y.push(j)
            }
        }
    }
    for(let i = 0;i < matrix.length;i++){
        let item = matrix[i]
        for(let j = 0;j < item.length;j++){
            let jItem = item[j]
            if(jItem != 0 && (x.includes(i) || y.includes(j))){
                item.splice(j,1,0)
            }
        }
    }
    return matrix
}