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computer-sciencepseudocode

What does x[1] mean? Pseudocode, doesn't specify language (although I ss

The following pseudocode calculates and outputs two values k and j. It then calculates and outputs to further values t and a. 

x = [7, 9, 6, 2, 4]
t = x[1]
k = x[1]
j = x[1]
FOR n = 2 TO 5
    t = t + x[n]
    IF x[n] > k THEN
        k = x[n]
    ENDIF
    IF x[n] <j THEN
        j = x[n]
NEXT n
OUTPUT (“k = ”, k, (“j = ”,j)
t = t – k – j
a = t/3
a = int(a)
OUTPUT (“a = ”,a)

what does x[1] mean? at first I thought it meant that the variable (eg: t) was = to the 1st argument of the array x. But then I realised that then t, k, and j would all have the same values...

Solution

  • The [1] is the index of the x array. In this case, x[1] has a value of 9.