Skip to content

README.md

Latest commit

 

History

History
93 lines (69 loc) · 2.5 KB

README.md

File metadata and controls

93 lines (69 loc) · 2.5 KB

My Lua Practice

<References>

<How to Set Up and Run Lua in Bash>

  • Install

    sudo apt update
sudo apt install -y lua5.4

  • Run

    lua your_script.lua

<List>

Multiplication Table (2025.12.30)

  • This script prints a 9x9 multiplication table in a 3-column block format.
  • It demonstrates nested loops, string formatting, and Lua's generic for loops.

Code and Results

Code : multiplication_table.lua 
--- Generates and prints the multiplication table
local function printMultiplicationTable()
    -- Outer loop: Controls the starting point of each block (1, 4, 7)
    for blockStart = 1, 9, 3 do
        -- Middle loop: Controls the multiplier (1 to 9) for each row in the block
        for multiplier = 1, 9 do
            local rowBuffer = ""

            -- Inner loop: Iterates through the 3 specific dan (columns) in the current block
            for dan = blockStart, blockStart + 2 do
                local result = dan * multiplier

                -- Format: "dan * multiplier = result" 
                -- %d: integer, %2d: integer with 2-character width for alignment
                local entry = string.format("%d * %d = %2d", dan, multiplier, result)

                -- Append formatted string with spacing between columns
                rowBuffer = rowBuffer .. entry .. "    "
            end

            print(rowBuffer)
        end

        -- Print a newline between blocks for better readability
        print("")
    end
end

-- Execute the function
printMultiplicationTable()
Results 
1 * 1 =  1    2 * 1 =  2    3 * 1 =  3    
1 * 2 =  2    2 * 2 =  4    3 * 2 =  6    
1 * 3 =  3    2 * 3 =  6    3 * 3 =  9    
…… 
1 * 9 =  9    2 * 9 = 18    3 * 9 = 27    

4 * 1 =  4    5 * 1 =  5    6 * 1 =  6    
4 * 2 =  8    5 * 2 = 10    6 * 2 = 12    
4 * 3 = 12    5 * 3 = 15    6 * 3 = 18    
……
4 * 9 = 36    5 * 9 = 45    6 * 9 = 54    

7 * 1 =  7    8 * 1 =  8    9 * 1 =  9    
7 * 2 = 14    8 * 2 = 16    9 * 2 = 18    
7 * 3 = 21    8 * 3 = 24    9 * 3 = 27    
……
7 * 9 = 63    8 * 9 = 72    9 * 9 = 81