概述
本 Demo 展示了 MAKEARRAY 函数的基本用法，通过两个示例演示如何使用 LAMBDA 函数创建指定大小的数组：第一个示例创建 3x3 乘法表，第二个示例生成 10x5 的随机颜色数组。
实现思路
启用动态数组功能，设置 allowDynamicArray 选项为 true
创建示例标签和说明文本，展示函数用途
第一个示例：使用 MAKEARRAY 创建乘法表，LAMBDA 接收行列索引并返回乘积
第二个示例：使用单元格引用指定数组大小，结合 RANDBETWEEN 和 CHOOSE 生成随机颜色数组
使用 FORMULATEXT 函数显示公式文本，便于查看公式结构
代码解析
启用动态数组功能
MAKEARRAY 是动态数组函数，在使用前需要启用 allowDynamicArray 选项。
示例 1：创建乘法表
此公式创建 3 行 3 列的数组，LAMBDA 函数接收行索引 r 和列索引 c，返回两者的乘积 r*c。结果生成一个乘法表：
示例 2：生成随机颜色数组
此公式使用单元格 C11 和 E11 的值（分别为 10 和 5）作为数组大小。LAMBDA 函数通过 RANDBETWEEN(1,3) 生成 1-3 的随机数，CHOOSE 函数根据随机数返回 "Red"、"Blue" 或 "Green"。
运行效果
第一个示例在 C6 单元格显示 3x3 乘法表，单元格 C5 显示公式文本
第二个示例在 C13 单元格显示 10x5 的随机颜色数组，每次计算会重新生成随机颜色
所有结果数组自动溢出到相邻单元格，无需手动填充
API 参考
MAKEARRAY 函数
rows：数组中的行数，必须大于零
cols：数组中的列数，必须大于零
lambda：调用的 LAMBDA 函数，接收两个参数：
row：当前行的索引（从 1 开始）
col：当前列的索引（从 1 开始）
LAMBDA 函数对数组中的每个单元格调用一次，返回值作为该单元格的结果。
allowDynamicArray 选项
启用动态数组功能后，动态数组函数（如 MAKEARRAY、FILTER、UNIQUE 等）才能正常工作。
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