Step by Step solution about How to resolve the algorithm Video display modes step by step in the Julia programming language

The code you provided is a snippet in Julia programming language that changes the resolution of the screen. It uses the run function to execute shell commands, and the Base.Sys.islinux() function to check if the operating system is Linux. If the operating system is Linux, the code executes the command xrandr -s 640x480 which changes the screen resolution to 640x480. After that, it waits for 3 seconds using the sleep function and then executes the command xrandr -s 1280x960 which changes the screen resolution to 1280x960. If the operating system is not Linux, the code executes the command mode CON: COLS=40 LINES=100 which changes the screen resolution to 40 columns and 100 lines. After that, it waits for 3 seconds using the sleep function and then executes the command mode CON: COLS=100 LINES=50 which changes the screen resolution to 100 columns and 50 lines.

if Base.Sys.islinux()
    run(`xrandr -s 640x480`)
    sleep(3)
    run(`xrandr -s 1280x960`)
else # windows
    run(`mode CON: COLS=40 LINES=100`)
    sleep(3)
    run(`mode CON: COLS=100 LINES=50`)
end