answer:import heapq def dijkstra(graph, start, end): queue = [] heapq.heappush(queue, (0, start)) distances = {node: float('infinity') for node in graph} distances[start] = 0 shortest_path = {} while queue: current_distance, current_node = heapq.heappop(queue) if current_distance > distances[current_node]: continue for neighbor, weight in graph[current_node].items(): distance = current_distance + weight if distance < distances[neighbor]: distances[neighbor] = distance heapq.heappush(queue, (distance, neighbor)) shortest_path[neighbor] = current_node path = [] while end: path.append(end) end = shortest_path.get(end) return distances, path[::-1] graph = { 'A': {'B': 1, 'C': 4}, 'B': {'A': 1, 'C': 2, 'D': 5}, 'C': {'A': 4, 'B': 2, 'D': 1}, 'D': {'B': 5, 'C': 1} } distances, path = dijkstra(graph, 'A', 'D') print(distances) print(path)

answer:He went to the store and bought the tools he needed for the project.

answer:Analyzing the survey results, the primary differences in sports preferences between males and females can be seen in a few key areas. Football is significantly more popular among males, with 43% of the male respondents naming it as their favorite sport, compared to 25% of females. On the other hand, females show a stronger preference for tennis, with 14% of female respondents favoring it, whereas only 3% of males do. Another notable difference lies in the popularity of baseball and soccer. Baseball is more popular among males (17%) than females (8%), while soccer has a higher following among females (17%) than expected, given the traditional perception of sports preferences in the US. Basketball, however, remains a consistently popular choice, with relatively similar percentages among both males and females. These results suggest that there are distinct differences in sports preferences between males and females in the survey. The data indicates that traditional American sports like football and baseball tend to be more popular among males, while females show a more diverse range of interests, with a stronger affinity for sports like tennis and soccer. Nonetheless, it is essential to remember that individual preferences can vary widely, and these findings should not be taken as absolute or representative of the entire US population.

answer:The data reveals that among males, the least popular sports are golf and tennis, with only 2% and 3% of respondents naming them as their favorite sports, respectively. The other category is slightly higher at 5%, indicating that there may be a few niche sports that attract a small but dedicated following. Among females, golf is also one of the least popular sports, with only 5% of respondents favoring it. However, the other category is more substantial, accounting for 10% of respondents. This suggests that there may be a wider range of sports or activities that appeal to a smaller but still notable segment of the female population. It is worth noting that the low percentages for golf and tennis among males do not necessarily imply a complete lack of interest in these sports. Rather, they may indicate that these sports are not as widely followed or passionately supported as other sports like football, basketball, or baseball.