// 1 Простой способ
        let arr = []
        let flag = false
        for (let i = 1; i < 10001; i++) {
            let cc = i + ''
            if (cc.length <= 3 && cc.length > 1) {
                if (cc[0] == cc[cc.length - 1]) {
                    // console.log(cc)
                    arr.push(cc)
                }
            } else if (cc.length == 4) {
                if (cc[0] == cc[cc.length - 1] && cc[1] == cc[2]) {
                    // console.log(cc)
                    arr.push(cc)
                }
            }
        }
        console.log(arr)
        // 2 Способ 66
        let dd = [...Array(10000).keys()].map(x => x + 1).filter(x => {
            return x.toString().length > 1 && x === Number(x.toString().split('').reverse().join(''))
        })