Question: using Scheme language!! 2. Define the following functions: a. (pad x ) returns the list x in which each zero clement is replaced by the

using Scheme language!! using Scheme language!! 2. Define the following functions: a. (pad x )

2. Define the following functions: a. (pad x ) returns the list x in which each zero clement is replaced by the previous non-zero element in the list. Any leading zeros will remain unchanged. Example: (pad ' (0104002) ) returns the list ( 0 Recall that an arithmetic progression is a sequence in which each element (except the bifsere. Example: (aprog '(2581114 17)) evaluates to True (the coirin

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