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src/main/java/com/dota/arr/Solution.java

@@ -0,0 +1,95 @@
+package com.dota.arr;
+
+/**
+ * Your FoodRatings object will be instantiated and called as such:
+ * FoodRatings obj = new FoodRatings(foods, cuisines, ratings);
+ * obj.changeRating(food,newRating);
+ * String param_2 = obj.highestRated(cuisine);
+ */
+class Solution {
+	public static void main(String[] args) {
+		new Solution().tictactoe(new String[]{"O X", " XO", "X O"});
+	}
+
+	public String tictactoe(String[] board) {
+		int n = board.length;
+		char[][] boards = new char[n][n];
+		var flag = false;
+		for (int i = 0; i < n; i++) {
+			var tmp = boards[i];
+			int j = 0;
+			for (char c : board[i].toCharArray()) {
+				tmp[j++] = c;
+				if (c == ' ') {
+					flag = true;
+				}
+			}
+		}
+		for (int i = 0; i < n; i++) {
+			int j;
+			for (j = 1; j < n; j++) {
+				if (boards[i][j] == ' ' || boards[i][j] != boards[i][j - 1]) {
+					break;
+				}
+			}
+
+			if (j == n) {
+				if (boards[i][j - 1] == ' ') {
+					return "Pending";
+				}
+				return String.valueOf(boards[i][0]);
+			}
+
+		}
+
+		for (int j = 0; j < n; j++) {
+			int i;
+			for (i = 1; i < n; i++) {
+				if (boards[i][j] == ' ' || boards[i][j] != boards[i - 1][j]) {
+					break;
+				}
+			}
+
+			if (i == n) {
+				return String.valueOf(boards[0][j]);
+			}
+		}
+
+		int i = 1;
+		int j = 1;
+		var count = 1;
+		while (i < n && j < n) {
+			if (boards[i][j] == ' ' || boards[i][j] != boards[i - 1][j - 1]) {
+				break;
+			}
+			count++;
+			i++;
+			j++;
+			if (count == n) {
+				return String.valueOf(boards[0][0]);
+			}
+		}
+
+		i = 1;
+		j = n - 2;
+		count = 1;
+		while (i < n && j >= 0) {
+			if (boards[i][j] == ' ' || boards[i][j] != boards[i - 1][j + 1]) {
+				break;
+			}
+			count++;
+			i++;
+			j--;
+			if (count == n) {
+				return String.valueOf(boards[0][n - 1]);
+			}
+		}
+
+
+		if (flag) {
+			return "Pending";
+		}
+
+		return "Draw";
+	}
+}

src/main/java/com/dota/design/FoodRatings.java

@@ -0,0 +1,59 @@
+package com.dota.design;
+
+import java.util.*;
+
+class Food {
+	public String name;
+	public String type;
+	public int order;
+
+	public Food(String name, String type, int order) {
+		this.name = name;
+		this.type = type;
+		this.order = order;
+	}
+
+	public String toString() {
+		return name + type + order;
+	}
+}
+
+class FoodRatings {
+	public static void main(String[] args) {
+		var f = new FoodRatings(new String[]{"A", "B"}, new String[]{"FF", "FF"}, new int[]{1, 2});
+		System.out.println(f.highestRated("FF"));
+		f.changeRating("A", 4);
+		System.out.println(f.highestRated("FF"));
+	}
+
+	// 名
+	Map<String, Food> foodMap = new HashMap<>();
+	// 类
+	Map<String, TreeSet<Food>> foodTreeMap = new HashMap<>();
+
+	public FoodRatings(String[] foods, String[] cuisines, int[] ratings) {
+		for (int i = 0; i < foods.length; i++) {
+			var f = new Food(foods[i], cuisines[i], ratings[i]);
+			foodMap.put(foods[i], f);
+			foodTreeMap.computeIfAbsent(cuisines[i], k -> new TreeSet<>((a, b) -> {
+				if (a.order == b.order) {
+					return a.name.compareTo(b.name);
+				}
+				return a.order - b.order;
+			}));
+
+			foodTreeMap.get(cuisines[i]).add(f);
+		}
+	}
+
+	public void changeRating(String food, int newRating) {
+		var f = foodMap.get(food);
+		foodTreeMap.get(f.type).remove(f);
+		f.order = newRating;
+		foodTreeMap.get(f.type).add(f);
+	}
+
+	public String highestRated(String cuisine) {
+		return foodTreeMap.get(cuisine).last().name;
+	}
+}