def sorting(filename):
    infile = open(filename)
    words = []
    for line in infile:
        temp = line.split()
        for i in temp:
            words.append(i)
    infile.close()
    words.sort()
    
    outline = open("result.txt", "w")
    for i in words:
        outline.writelines(i)
        outline.writelines(" ")
    outline.close()

sorting("sample.txt")