Lecture9

Money problem

You have infinite number of coins of 2, 3, 5 cents.

Calculate how many sequences to collect N from that coins, if possible.

Money problem

•Create array A of size N+1

•A[0] = 1 // one way to collect zero, is to put nothing

•For i = 1 to N do

•A[i] = 0

•if(i>=2) A[i] = A[i] + A[i-2]

•if(i>=3) A[i] = A[i] + A[i-3]

•if(i>=5) A[i] = A[i] + A[i-5]

•output A[N]

Home Work

•Find Longest decreasing sequence

•Given numbers, find size of longest decreasing sequence in that numbers.

•Hint: in sequence all elements must be adjacent.

•Largest rectangle

•Given Matrix N,M filled with integer values. Find rectangle that starts in top-left corner and have maximum sum of elements inside.