xs={"第1组":["小张","小李","小王"],"第2组":["小黄","小霞","小斌"],"第3组":["小蓝","小华","小诚"]}
cj=[{"小张":90,"小李":80,"小王":75},{"小黄":86,"小霞":70,"小斌":89},{"小蓝":67,"小华":90,"小诚":77}]