Computer Science (AS & A Level) · Oct / Nov 2023 · Paper 22 · Question 5

A global 1D array of integers contains four elements, which are assigned values as shown: Mix[1] ← 1 Mix[2] ← 3 Mix[3] ← 4 Mix[4] ← 2 A procedure Process() manipulates the values in the array. The procedure is written in pseudocode: PROCEDURE Process(Start : INTEGER) DECLARE Value, Index, Count : INTEGER Index ← Start Count ← 0 REPEAT Value ← Mix[Index] Mix[Index] ← Mix[Index] - 1 Index ← Value Count ← Count + 1 UNTIL Count = 5 Mix[4] ← Count * Index ENDPROCEDURE Complete the trace table on the opposite page by dry running the procedure when it is called as follows: CALL Process(3) 11 Index Value Count Mix[1] Mix[2] Mix[3] Mix[4] [6]

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