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Added code to graph traversal using BFS, DFS and code to calculate mi…
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…nimum number of coins to get target
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@asesh
asesh committed Oct 26, 2023
1 parent 7bb4e34 commit 8f0cb29
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80 changes: 68 additions & 12 deletions algorithm/graph_algorithm.cpp
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#include "header.h"
#include "graph_algorithm.h"

void create_directed_graph() {
// Adjanceny list representation of graph
void create_undirected_graph() {
// Adjacency list representation of graph
/*
3 - 8 - 6 - 9 - 11 - 10
| | | |
1 - 7 - 0 - 12 - 19 - 17
| | | |
4 - 5 - 13 - 18 - 20
*/
std::unordered_map<int, std::list<int>> undirected_graph = {
{3, {1, 8}},
{8, {3, 6}},
{6, {8, 9, 0}},
{9, {6, 11, 12}},
{11, {9, 10}},
{10, {11, 17}},
{1, {3, 7}},
{7, {0, 1, 5}},
{0, {6, 7, 12, 13}},
{12, {0, 9, 18, 19}},
{19, {12, 17, 20}},
{17, {10, 19}},
{4, {5}},
{5, {4, 7, 13}},
{13, {0, 5, 18}},
{18, {12, 13, 20}},
{20, {18, 19}}
};

CBaseGraph<int> undi_graph(std::move(undirected_graph));
undi_graph.traverse_bfs(3);
undi_graph.traverse_dfs(7);
}

void create_directed_graph() {
// Adjanceny list representation of directed graph
/*
3 -> 8 -> 6 -> 9 -> 11 -> 10
| | | |
1 -> 7 -> 0 -> 12 -> 19 -> 17
| | | |
4 <- 5 <- 13 <- 18 <- 20
Adjacency list:
Node Adjacent nodes
3 8 - 1
8 3 - 6
6 8 - 9 - 0
0 6 - 7 - 12 - 13
...
20 18 - 19
8 6
6 9 - 0
9 11 - 12
11 10
10 17
1 7
7 0 - 5
0 12 - 13
12 18 - 19
19 17 - 20
4
5 4
13 5
18 13
20 18
*/
std::unordered_map<int, std::list<int>> directed_graph = {
{1, {3, 7}},
{3, {1, 8}}
{3, {1, 8}},
{8, {6}},
{6, {9, 0}},
{9, {11, 12}},
{11, {10}},
{10, {17}},
{1, {7}},
{7, {0, 5}},
{0, {12, 13}},
{12, {18, 19}},
{19, {17, 20}},
{5, {4}},
{13, {5}},
{18, {13}},
{20, {18}}
};
CDirectedGraph<int, int> di_graph(directed_graph);

CDirectedGraph<int, int> di_graph(std::move(directed_graph));
di_graph.traverse_bfs();
}
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