USE ONLy FOR LOOPS AND IF ELSE STATEMENTS $1.$Down$-$sample any color or grayscale image from a $10241024$ pixel$-$sized image

$($such as rose.jpg$)$ to $512512,256256,128128,6464$ and $3232,$ respectively.

Then, up$-$sample the images generated before, back to $10241024$ pixels. Save

each image to show the effect.

b$.$ Change the gray level of an $8-$bit gray level image $($that has initially $256$ gray levels$)$ to $128,64,32,16,8,4,$ and $2$ gray level images, respectively. Save each image to show the effect. Dont use build in functions in matlab