A music player stores music in a digital form and has a display which shows the track being played. (a) Up to 16 characters can be displayed. Track titles longer than 16 characters will need to be trimmed as follows: • Words must be removed from the end of the track title until the resulting title is less than 14 characters. • When a word is removed, the space in front of that word is also removed. • Three dots are added to the end of the last word displayed when one or more words have been removed. The table below shows some examples: | Original title | Display string | |------------------------|--------------------------------------------| | | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | | Bat out of Hull | B a t o u t o f H u l l | | Bohemian Symphony | B o h e m i a n . . . | | Paperbook Writer | P a p e r b o o k W r i t e r | | Chris Sings the Blues | C h r i s S i n g s . . . | | Green Home Alabama | G r e e n H o m e . . . | A function Trim() will: • take a string representing the original title • return the string to be displayed. Assume: • Words in the original title are separated by a single space character. • There are no spaces before the first word or after the last word of the original title. • The first word of the original title is less than 14 characters.

1. (a)Write pseudocode for the function Trim().[7]
2. (b)(i)Music is stored as a sequence of digital samples. Each digital sample is a denary value in the range 0 to 99999999 (8 digits). The samples are to be stored in a text file. Each sample is converted to a numeric string and 32 samples are concatenated (joined) to form a single line of the text file. Each numeric string is 8 characters in length; leading '0' characters are added as required. Example: | Sample | Denary value | String | |--------|--------------|------------| | 1 | 456 | "00000456" | | 2 | 48 | "00000048" | | 3 | 37652 | "00037652" | | ... | | | | 32 | 673 | "00000673" | The example samples will be stored in the text file as a single line: "000004560000004800037652...00000673" Identify one drawback of adding leading '0' characters to each numeric string.[1]
3. (b)(ii)Suggest an alternative method of storing the samples which does not involve adding leading '0' characters but which would still allow each individual sample to be extracted.[1]
4. (b)(iii)State one drawback of the alternative method given in part (b)(ii).[1]