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HuangHai
2025-08-30 18:35:01 +08:00
commit 1f397eca87
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34
C++专题课程/贪心/贪心算法-背包.cpp Normal file
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#include<bits/stdc++.h>
using namespace std;
#define NUM 50
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> w[], v[] <20>Ѱ<EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>ź<EFBFBD><C5BA><EFBFBD>
void Knapsack(int n,float M,float v[],float w[],float x[]) {
int i;
for(i = 1; i <= n; i++) x[i] = 0; //<2F><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
float c = M;
for(i = 1; i <= n; i++) { //ȫ<><C8AB><EFBFBD><EFBFBD>װ<EFBFBD>µ<EFBFBD><C2B5><EFBFBD>Ʒ,<2C>ҽ<EFBFBD> x[i] = 1
if(w[i]>c) break;
x[i] = 1;
c -= w[i];
}
if(i <= n) x[i] = c / w[i]; //<2F><><EFBFBD><EFBFBD>Ʒi <20>IJ<EFBFBD><C4B2><EFBFBD>װ<EFBFBD><D7B0>
}
int main() {
float M = 50; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɵ<EFBFBD><C9B5><EFBFBD><EFBFBD><EFBFBD>
float w[] = {0,10,20,30}; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ʒ<EFBFBD><C6B7><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
float v[] = {0,60,100,120};
float x[NUM]; //<2F>洢ÿ<E6B4A2><C3BF><EFBFBD><EFBFBD>Ʒװ<C6B7>뱳<EFBFBD><EBB1B3><EFBFBD>ı<EFBFBD><C4B1><EFBFBD>
int n = (sizeof(w) / sizeof(w[0])) - 1;
Knapsack(n, M, v, w, x);
for(int i = 1; i <= n; i++)
cout << "<EFBFBD><EFBFBD>Ʒ " << i << " װ<><D7B0><EFBFBD>ı<EFBFBD><C4B1><EFBFBD>: " << x[i] << endl;
return 0;
}