参考:http://www.tuicool.com/articles/Fji2Qb;这个博客的在输出选择的物品时有错误!!!运行环境python2.x
代码如下:
#n-供选择的物品个数,c-物品最大承重(就是限制条件),w-每个物品的重量,v-每个物品的价值
def bag(n,c,w,v):
res=[[-1 for j in range(c+1)] for i in range(n+1)]
for j in range(c+1):
res[0][j]=0
for i in range(1,n+1):
for j in range(1,c+1):
res[i][j]=res[i-1][j]
if j>=w[i-1] and res[i][j]res[i-1][j]:
x[i-1]=True
j-=w[i-1]
print('选择的物品为:')
for i in range(n):
if x[i]:
print '第',i,'个,'
print('')
if __name__=='__main__':
n=5
c=10
w=[2,2,6,5,4]
v=[6,3,5,7,6]
res=bag(n,c,w,v)
show(n,c,w,res)
输出:[[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [-1, 0, 6, 6, 6, 6, 6, 6, 6, 6, 6], [-1, 0, 6, 6, 9, 9, 9, 9, 9, 9, 9], [-1, 0, 6, 6, 9, 9, 9, 9, 11, 11, 14], [-1, 0, 6, 6, 9, 9, 9, 13, 13, 16, 16], [-1, 0, 6, 6, 9, 9, 12, 13, 15, 16, 16]]
最大价值为: 16
选择的物品为:
第 0 个,
第 1 个,
第 3 个,