Question: (a) Describe a reduction of the change-making problem (finding the least number of coins to make change for a given value) into a rod cutting

(a) Describe a reduction of the change-making problem (finding the least number of coins to make change for a given value) into a rod cutting problem.

(b) Prove the loop invariant for bubble sort: after i iterations the indices n-1 through n-i will contain the i maximal values from the original array.

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