Q1（With a for loop）Create 20 columns that turn red only when you hover over the column.
Q2(a) Skip over col #7.
Why doesn’t it skip the 7th row as I expected when columnN == 7 and on == false? Instead, nothing is displayed.
Q2(d) Make every column a different color.
The random color keeps changing and flickering with each frame because of the draw() loop.
https://editor.p5js.org/yj3612/full/k_pNeLf8l
So I added a state comparison: if columnN != lastState, the RGB values are randomly changed. This way, the color only changes when the state changes, instead of changing every frame.
https://editor.p5js.org/yj3612/full/TfoLzXYhu
1.Sketch 2.Leave ( mirror effect)
https://editor.p5js.org/yj3612/full/7B_3e_WKi
Fun effect if birdx< =5