def change_order(text):
    array_text = [i for i in text]
    for index in range(0, len(text)):
        if text[index-1] == " " or index-1 < 0:
            print(f"{index}. FirstLetterIndex = {index}")
            FirstLetterIndex = index
 
        try:
            if text[index+1] == " ":
                print(f"{index}. S LastLetterIndex = {index}")
                LastLetterIndex = index
 
            else:
                continue
        except:
            print(f"{index}. E LastLetterIndex = {index}")
            LastLetterIndex = index
 
        print(f"{index}. FirstLetterIndex = {FirstLetterIndex}, LastLetterIndex = {LastLetterIndex}")
        array_text[LastLetterIndex] = array_text[FirstLetterIndex]
 
    print("".join(array_text))
 
change_order("Hello One World")

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