【进阶实战】Lua差分数组：沙巴克防线区间加成的批量标记

local function addRange(a, i, j, v)
    for k = i, j do
        a[k] = a[k] + v            -- 逐段加，95段写95次
    end
end

local diff = {}
local function mark(i, j, v)
    diff[i] = (diff[i] or 0) + v
    diff[j + 1] = (diff[j + 1] or 0) - v   -- 两点标记区间
end
local function apply(n)
    local cur, out = 0, {}
    for k = 1, n do
        cur = cur + (diff[k] or 0)
        out[k] = cur               -- 前缀还原每段加成
    end
    return out
end
sendmsg(actor, 1, "沙巴克防线加成段数 " .. #apply(100))