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55 lines
1.2 KiB
55 lines
1.2 KiB
import math
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"""
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Jeffery Russell
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11-12-18
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"""
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def minMul(S):
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"""
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Simple function to print the matrixes used in
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the minimum matrix chain multiplication problem
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using dynamic programming.
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"""
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n = len(S)
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m = [[math.inf for i in range(n)] for j in range(n)]
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c = [[0 for i in range(n)] for j in range(n)]
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for i in range(0, n):
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m[i][i] = 0
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for l in range(1, n + 1):
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for i in range(0, n-l + 1):
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j = l + i -1
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for k in range(i, j):
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temp = m[i][k] + m[k + 1][j] + S[i][0] * S[k][1] * S[j][1]
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print(temp)
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if temp < m[i][j]:
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m[i][j] = temp
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c[i][j] = k + 1
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for i in range(0, n):
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for y in range(0, n):
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print(str(m[i][y]) + " ", end =" ")
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print()
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print()
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print()
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for i in range(0, n):
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for y in range(0, n):
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print(str(c[i][y]) + " ", end =" ")
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print()
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"""
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Makes sure that other programs don't execute the main
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"""
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if __name__ == '__main__':
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try:
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minMul([(10,100),(100, 5),(5, 50)])
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#minMul([(5,10),(10,3),(3,12), (12,5), (5,50), (50,6)])
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except KeyboardInterrupt:
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exit()
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