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dijkstra.cpp
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34 lines (32 loc) · 932 Bytes
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/* -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.
* File Name : dijkstra.cpp
* Purpose :
* Creation Date : 2019-05-09 21:33:15
* Last Modified : 2019-05-09 21:42:33
* Created By : chenjiang
* Modified By : chenjiang
_._._._._._._._._._._._._._._._._._._._._.*/
void dijkstra(int vs, int prev[], int dist[], int node_num) {
int flag[node_num];
for (int i = 0; i < node_num; i++) {
flag[i] = 0;
prev[i] = 0;
dist[i] = matrix[vs][i];
}
for (int i = 1; i < node_num; i++) {
int min = INF;
int k;
for (int j = 0; j < node_num; j++) {
if (flag[j] == 0 && dist[j] < min) {
min = dist[j];
k = j;
}
}
for (int j = 0; j < node_num; j++) {
if (flag[j] == 0 && min + matrix[k][j] < dist[j]) {
dist[j] = min + matrix[k][j];
prev[j] = k;
}
}
}
}