0) Use the nearest-neighbor algorithm starting with vertex C to find a Hamilton circuit.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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**Problem:**

Use the nearest-neighbor algorithm starting with vertex C to find a Hamilton circuit.

**Diagram Explanation:**

The diagram is a weighted graph consisting of four vertices: A, B, C, and D. They are connected by edges, each with an assigned weight representing the distance or cost between vertices:

- The edge between A and B has a weight of 9.
- The edge between A and C has a weight of 4.
- The edge between A and D has a weight of 5.
- The edge between B and C has a weight of 2.
- The edge between B and D has a weight of 8.
- The edge between C and D has a weight of 1.

The task is to apply the nearest-neighbor algorithm, starting at vertex C, to determine a Hamilton circuit that visits each vertex exactly once and returns to the starting vertex, C.

**Nearest-Neighbor Algorithm Steps:**

1. Start at vertex C.
2. Select the edge with the smallest weight connected to C. This is the edge C-D with a weight of 1.
3. Move to vertex D.
4. From D, select the next smallest edge to an unvisited vertex. This is the edge D-A with a weight of 5.
5. Move to vertex A.
6. From A, select the next smallest edge to an unvisited vertex. This is the edge A-B with a weight of 9.
7. Move to vertex B.
8. Finally, return to the starting vertex C, through the edge B-C with a weight of 2.

**Resulting Hamilton Circuit:**

C → D → A → B → C

The total weight of this circuit is 1 + 5 + 9 + 2 = 17.
Transcribed Image Text:**Problem:** Use the nearest-neighbor algorithm starting with vertex C to find a Hamilton circuit. **Diagram Explanation:** The diagram is a weighted graph consisting of four vertices: A, B, C, and D. They are connected by edges, each with an assigned weight representing the distance or cost between vertices: - The edge between A and B has a weight of 9. - The edge between A and C has a weight of 4. - The edge between A and D has a weight of 5. - The edge between B and C has a weight of 2. - The edge between B and D has a weight of 8. - The edge between C and D has a weight of 1. The task is to apply the nearest-neighbor algorithm, starting at vertex C, to determine a Hamilton circuit that visits each vertex exactly once and returns to the starting vertex, C. **Nearest-Neighbor Algorithm Steps:** 1. Start at vertex C. 2. Select the edge with the smallest weight connected to C. This is the edge C-D with a weight of 1. 3. Move to vertex D. 4. From D, select the next smallest edge to an unvisited vertex. This is the edge D-A with a weight of 5. 5. Move to vertex A. 6. From A, select the next smallest edge to an unvisited vertex. This is the edge A-B with a weight of 9. 7. Move to vertex B. 8. Finally, return to the starting vertex C, through the edge B-C with a weight of 2. **Resulting Hamilton Circuit:** C → D → A → B → C The total weight of this circuit is 1 + 5 + 9 + 2 = 17.
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