Using matlab to solve 4 and 5

UR MAGINATIONTM 4. Create a 200x200 matrix of random integers in the range [0, 64]. Display the image/matrix with image ( .). Write a function to take the image and contrast stretch the image from [0,255]. Display the new image with image( Display both images with the 256-element gray colormap. 5. Form the histograms of the two images created in Problem #4. Display them on the same graph. Use the function, [n, v] -hist (x, 65)