Lua约瑟夫环：报数出列的循环模拟

-- 错误：出列后指针多走一格，报数起点错位
idx = (idx + m) % #ring + 1
table.remove(ring, idx)

local function josephus(n, m)
    local ring, idx, out = {}, 1, {}
    for i = 1, n do ring[i] = i end
    while #ring > 0 do
        idx = (idx + m - 2) % #ring + 1
        out[#out + 1] = ring[idx]
        table.remove(ring, idx)
    end
    return out
end
local label = panel:getChildByName("joText")
label:setString(table.concat(josephus(5, 3), ","))