let b1 = [11,22,445,12,53]
let b2 = [11,22,445,12,53]
let shengxu = b1.sort((a,b)=> a > b ? 1 : a < b ? -1 :0 ) // 升序 [11, 12, 22, 53, 445]
let jiangxu = b2.sort((a,b)=> a < b ? 1 : a > b ? -1 :0 ) // 降序 [445, 53, 22, 12, 11]
let b1 = [11,22,445,12,53]
let b2 = [11,22,445,12,53]
let shengxu = b1.sort((a,b)=> a > b ? 1 : a < b ? -1 :0 ) // 升序 [11, 12, 22, 53, 445]
let jiangxu = b2.sort((a,b)=> a < b ? 1 : a > b ? -1 :0 ) // 降序 [445, 53, 22, 12, 11]
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