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HuangHai
44
C++专题课程/贪心/TSP问题.cpp
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44
C++专题课程/贪心/TSP问题.cpp
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#include<iostream>
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using namespace std;
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#define n 4
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int main()
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{
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int i,j,k,l;
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int S[n];//<2F><><EFBFBD>ڴ洢<DAB4>ѷ<EFBFBD><D1B7>ʹ<EFBFBD><CAB9>ij<EFBFBD><C4B3><EFBFBD>
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int D[n][n];//<2F><><EFBFBD>ڴ洢<DAB4><E6B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD>ľ<EFBFBD><C4BE><EFBFBD>
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int sum = 0;//<2F><><EFBFBD>ڼ<EFBFBD><DABC><EFBFBD><EFBFBD>ѷ<EFBFBD><D1B7>ʹ<EFBFBD><CAB9>ij<EFBFBD><C4B3>е<EFBFBD><D0B5><EFBFBD>С·<D0A1><C2B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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int Dtemp;//<2F><>֤Dtemp<6D><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD>ľ<EFBFBD><C4BE>붼<EFBFBD><EBB6BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD>㷨<EFBFBD><E3B7A8><EFBFBD><EFBFBD><EFBFBD>и<EFBFBD>ȷ<D7BC><C8B7>ӦΪ<D3A6><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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int flag;////<2F><>Ϊ<EFBFBD><CEAA><EFBFBD>ʵı<CAB5>־<EFBFBD><D6BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD>Ϊ1<CEAA><31><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD>Ϊ0
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/*<2A><>ʼ<EFBFBD><CABC>*/
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i = 1;//i<><69><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѷ<EFBFBD><D1B7>ʹ<EFBFBD><CAB9>ij<EFBFBD><C4B3><EFBFBD>
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S[0] = 0;
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D[0][1] = 2;D[0][2] = 6;D[0][3] = 5;D[1][0] = 2;D[1][2] = 4;
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D[1][3] = 4;D[2][0] = 6;D[2][1] = 4;D[2][3] = 2;D[3][0] = 5;
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D[3][1] = 4;D[3][2] = 2;
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do{
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k = 1;Dtemp = 10000;
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do{
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l = 0;flag = 0;
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do{
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if(S[l] == k){//<2F>жϸó<CFB8><C3B3><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>ѱ<EFBFBD><D1B1><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD>
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flag = 1;//<2F><>flagΪ1
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break;//<2F><><EFBFBD><EFBFBD>ѭ<EFBFBD><D1AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ıȽ<C4B1>
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}else
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l++;
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}while(l < i);
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if(flag == 0&&D[k][S[i - 1]] < Dtemp){/*D[k][S[i - 1]]<5D><>ʾ<EFBFBD><CABE>ǰδ<C7B0><CEB4><EFBFBD><EFBFBD><EFBFBD>ʵij<CAB5><C4B3><EFBFBD>k<EFBFBD><6B><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ѷ<EFBFBD><D1B7>ʹ<EFBFBD><CAB9>ij<EFBFBD><C4B3><EFBFBD>i-1֮<31><D6AE><EFBFBD>ľ<EFBFBD><C4BE><EFBFBD>*/
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j = k;//j<><6A><EFBFBD>ڴ洢<DAB4>ѷ<EFBFBD><D1B7>ʹ<EFBFBD><CAB9>ij<EFBFBD><C4B3><EFBFBD>k
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Dtemp = D[k][S[i - 1]];//Dtemp<6D><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>洢<EFBFBD><E6B4A2>ǰ<EFBFBD><C7B0>С·<D0A1><C2B7><EFBFBD><EFBFBD>ֵ
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}
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k++;
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}while(k < n);
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S[i] = j;//<2F><><EFBFBD>ѷ<EFBFBD><D1B7>ʹ<EFBFBD><CAB9>ij<EFBFBD><C4B3><EFBFBD>j<EFBFBD><6A><EFBFBD>뵽S[i]<5D><>
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i++;
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sum += Dtemp;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̾<EFBFBD><CCBE>룬ע<EBA3AC>⣺<EFBFBD>ڽ<EFBFBD><DABD><EFBFBD>ѭ<EFBFBD><D1AD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD>ص<EFBFBD>ԭ<EFBFBD><D4AD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><C4B3><EFBFBD>
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}while(i < n);
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sum += D[0][j];//D[0][j]Ϊ<><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԭ<EFBFBD><D4AD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><C4B3><EFBFBD>֮<EFBFBD><D6AE><EFBFBD>ľ<EFBFBD><C4BE><EFBFBD>
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for(j = 0; j < n; j++){ //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><C4B3>е<EFBFBD>·<EFBFBD><C2B7>
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cout<<j<<" ";
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}
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cout<<"\n"<<sum;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>·<EFBFBD><C2B7><EFBFBD><EFBFBD>ֵ
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}
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1
C++专题课程/贪心/复习资料.txt
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1
C++专题课程/贪心/复习资料.txt
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https://www.cnblogs.com/cao-lei/p/6896841.html
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1
C++专题课程/贪心/小白带你学-贪心算法.txt
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1
C++专题课程/贪心/小白带你学-贪心算法.txt
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https://mp.weixin.qq.com/s/978Tdplj3IaSG2dc-5F-aw
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34
C++专题课程/贪心/贪心算法-活动安排.cpp
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C++专题课程/贪心/贪心算法-活动安排.cpp
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#include<bits/stdc++.h>
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using namespace std;
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#define NUM 50
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void GreedySelector(int n, int s[], int f[], bool b[]) {
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b[1]=true; //Ĭ<>Ͻ<EFBFBD><CFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>Ȱ<EFBFBD><C8B0><EFBFBD>
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int j=1; //<2F><>¼<EFBFBD><C2BC><EFBFBD><EFBFBD>һ<EFBFBD>μ<EFBFBD><CEBC><EFBFBD>b<EFBFBD>еĻ
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//<2F><><EFBFBD>μ<EFBFBD><CEBC><EFBFBD><EFBFBD>i<EEB6AF>Ƿ<EFBFBD><C7B7>뵱ǰ<EBB5B1><C7B0>ѡ<EFBFBD><D1A1><EFBFBD>Ļ<C4BB><EEB6AF><EFBFBD><EFBFBD>
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for(int i=2; i<=n; i++) {
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if (s[i]>=f[j]) {
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b[i]=true;
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j=i;
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} else
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b[i]=false;
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}
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}
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int main() {
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int s[] = {0,1,3,0,5,3,5,6,8,8,2,12}; //<2F>洢<EFBFBD><EFBFBD><EEB6AF>ʼʱ<CABC><CAB1>
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int f[] = {0,4,5,6,7,8,9,10,11,12,13,14}; //<2F>洢<EFBFBD><EFBFBD><EEB6AF><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>
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bool b[NUM]; //<2F>洢<EFBFBD><E6B4A2><EFBFBD><EFBFBD><EFBFBD>ŵĻ<C4BB><EEB6AF><EFBFBD><EFBFBD>
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int n = (sizeof(s) / sizeof(s[0])) - 1;
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GreedySelector(n, s, f, b);
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for(int i = 1; i <= n; i++) { //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ŵĻ<C4BB><EEB6AF><EFBFBD>ź<EFBFBD><C5BA><EFBFBD><EFBFBD>Ŀ<EFBFBD>ʼʱ<CABC><CAB1><EFBFBD>ͽ<EFBFBD><CDBD><EFBFBD>ʱ<EFBFBD><CAB1>
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if(b[i]) cout << "<EFBFBD> " << i << " :" << "(" << s[i] << "," << f[i] << ")" <<endl;
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}
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return 0;
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}
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C++专题课程/贪心/贪心算法-背包.cpp
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C++专题课程/贪心/贪心算法-背包.cpp
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#include<bits/stdc++.h>
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using namespace std;
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#define NUM 50
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> w[], v[] <20>Ѱ<EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>ź<EFBFBD><C5BA><EFBFBD>
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void Knapsack(int n,float M,float v[],float w[],float x[]) {
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int i;
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for(i = 1; i <= n; i++) x[i] = 0; //<2F><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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float c = M;
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for(i = 1; i <= n; i++) { //ȫ<><C8AB><EFBFBD><EFBFBD>װ<EFBFBD>µ<EFBFBD><C2B5><EFBFBD>Ʒ,<2C>ҽ<EFBFBD> x[i] = 1
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if(w[i]>c) break;
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x[i] = 1;
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c -= w[i];
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}
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if(i <= n) x[i] = c / w[i]; //<2F><><EFBFBD><EFBFBD>Ʒi <20>IJ<EFBFBD><C4B2><EFBFBD>װ<EFBFBD><D7B0>
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}
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int main() {
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float M = 50; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɵ<EFBFBD><C9B5><EFBFBD><EFBFBD><EFBFBD>
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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>
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float v[] = {0,60,100,120};
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float x[NUM]; //<2F>洢ÿ<E6B4A2><C3BF><EFBFBD><EFBFBD>Ʒװ<C6B7>뱳<EFBFBD><EBB1B3><EFBFBD>ı<EFBFBD><C4B1><EFBFBD>
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int n = (sizeof(w) / sizeof(w[0])) - 1;
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Knapsack(n, M, v, w, x);
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for(int i = 1; i <= n; i++)
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cout << "<EFBFBD><EFBFBD>Ʒ " << i << " װ<><D7B0><EFBFBD>ı<EFBFBD><C4B1><EFBFBD>: " << x[i] << endl;
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return 0;
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}
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