杨魅力
let a = [2,2,2,2,2,2,2,2,2,2];a[1] + a[1] + a[1] = 62 + 2 + 2 = 6a[3] + a[3] + a[3] = 6a[4] + a[4] + a[4] = 6a[5] + a[5] + a[5] = 6a[6] + a[6] + a[6] = 6a[7] + a[7] + a[7] = 6a[8] + a[8] + a[8] = 6a[9] + a[9] + a[9] = 6