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Knapsack 2.0.py
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Knapsack 2.0.py
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from random import *
item=[]
weight=[]
percent=[10, 20, 30, 40, 50, 60, 70, 80, 90, 100]
significance=[]
range_num=int(input("Enter the number of rows for comparison : "))
total_list=[]
res=[]
final_list=[]
def table_values():
print("\n item",item,"\n")
print("\n weight",weight,"\n")
print("\n significance",significance,"\n")
def initializer():
for i in range(range_num):#here
item.append(i)
weight.append(randint(1, 12))
significance.append(percent[(randint(0, 10-1))])
#p()
###checking####
#m=weight[0]
#for i in range(1,len(weight)):
# if(m>weight[i]):
# m=weight[i]
##print(m)
#p()
#m=0
#for i in range(len(weight)):
# if(weight[i]==12):
# if(m<significance[i]):
# m=significance[i]
# weight[i]=0
# significance[i]=0
#print(m)
#i=-1
#while(True):
# i=i+1
# try:
# if(weight[i]==0):
# weight.pop(i)
# significance.pop(i)
# except:
# print(len(weight),"weight")
# print(len(significance),"significancwe")
# break
#p()
def random(n):
l=[]
# Python3 implementation of the
# above approach
# Function to print the output
def custom():
l1=[]
index=0
for i in range(0,len(total_list),range_num):#here
for j in range(0,range_num):#here
l1.append(total_list[index])
index=index+1
final_list.append(l1)
l1=[]
print(final_list)
def printTheArray(arr, n):
for i in range(0, n):
print(arr[i], end = " ")
l.append(arr[i])
print(end = "\t\tPROCESSING")
print()
# Function to generate all binary strings
def generateAllBinaryStrings(n, arr, i):
if i == n:
printTheArray(arr, n)
return
# First assign "0" at ith position
# and try for all other permutations
# for remaining positions
arr[i] = 0
generateAllBinaryStrings(n, arr, i + 1)
# And then assign "1" at ith position
# and try for all other permutations
# for remaining positions
arr[i] = 1
generateAllBinaryStrings(n, arr, i + 1)
# Driver Code
#n = 4
arr = [None] * n
# Print all binary strings
generateAllBinaryStrings(n, arr, 0)
global total_list
total_list=l
custom()
return(l)
#print(l)
#print(len(l))
def result(l):
#######breaking list in final ##########
final=[]
l1=[]
index=0
for i in range(0,len(l),range_num):#here
for j in range(0,range_num):#here
l1.append(l[index])
index=index+1
final.append(l1)
l1=[]
#print(len(final))
########max###############
print("\n\nRESULT\n\n")
best=0
max_weights=[]
max_significance=[]
while(best!=range_num):
index=0
max1=-1
x=0
row=0
for i in range(len(final)):
k=0
for j in range(range_num):#here
x+=1
if(final[i][j]==1):
k+=weight[j]
if((k>max1)and(k<=20)):#max weight
max1=k
index=i
row=int(x/range_num)#here
#print("max is:",max1)
max_weights.append(max1)
#print("row is:",row," bcz combinations are : ", end="")
#for i in range(row-1,row):
# print(final[i])
#print(index)
#####significance######
k=0
for j in range(range_num):#here
if(final[row-1][j]==1):
#print("true")
k+=significance[j]
#print("significance",k)
max_significance.append(k)
res.append(row-1)
print(res)
best+=1
###rejecting already printed rows#####
for i in range(range_num):
final[index][i]=0
#print(max_weights)
#print(max_significance)
best=0
index=0
print("item\t\tweight\t\tsignificances\t combinations")
for i in range(range_num):
print(i+1,"\t\t",max_weights[i],"\t\t",max_significance[i],"\t\t",final_list[res[i]])
if(best<max_significance[i]):
best=max_significance[i]
index=i
print("\nBEST IS : ")
print("item\t\tweight\t\tsignificances\t combinations")
print(index+1,"\t\t",max_weights[index],"\t\t",max_significance[index],"\t\t",final_list[res[index]])
####way of procedure####
#l=random(len(weight))
#result(l)
initializer()
table_values()
result(random(len(weight)))
print(res)
print(final_list)