周赛319

src/main/java/contest/y2022/m11/Week319.java

@@ -0,0 +1,112 @@
+package contest.y2022.m11;
+
+import com.code.leet.entiy.TreeNode;
+
+import java.util.*;
+
+public class Week319 {
+    public static void main(String[] args) {
+        Week319 solution = new Week319();
+        String s = "rzdtuheehuolxbhcychbpmcmxxxxxxiywqwyierjsuusjreunvvnu";
+        int k = 4;
+        System.out.println(solution.maxPalindromes(s, k));
+    }
+
+    public int maxPalindromes(String s, int k) {
+        if (k == 1) {
+            return s.length();
+        }
+        nums = new int[s.length()];
+        max = 0;
+        dfs(s, 0, k, 0);
+        return max;
+    }
+
+    int[] nums;
+    int max;
+
+    private void dfs(String s, int index, int k, int num) {
+        if (index == s.length() || s.length() - index < k) {
+            max = Math.max(max, num);
+            return;
+        }
+        nums[index] = Math.max(nums[index], num);
+        String tmp = s.substring(index + k - 1);
+        int i = tmp.indexOf(s.charAt(index));
+        if (i >= 0) {
+            StringBuilder sb = new StringBuilder(s.substring(index, index + k + i));
+            if (sb.toString().equals(sb.reverse().toString())) {
+                if (nums[index + k + i - 1] < num + 1) {
+                    nums[index + k + i - 1] = num + 1;
+                    dfs(s, index + k + i, k, num + 1);
+                }
+            }
+        }
+        dfs(s, index + 1, k, num);
+    }
+//--------------------------
+    public int minimumOperations(TreeNode root) {
+        Queue<TreeNode> queue = new LinkedList<>();
+        queue.add(root);
+        int res = 0;
+        while (!queue.isEmpty()) {
+            List<Integer> list = new ArrayList<>();
+            List<Integer> sort = new ArrayList<>();
+            int size = queue.size();
+            for (int i = 0; i < size; i++) {
+                TreeNode node = queue.poll();
+                list.add(node.val);
+                sort.add(node.val);
+                Collections.sort(sort);
+                List<Integer> tl = new ArrayList<>();
+                List<Integer> ts = new ArrayList<>();
+                for (int j = 0; j < list.size(); j++) {
+                    if (list.get(j) != sort.get(j)) {
+                        tl.add(list.get(j));
+                        ts.add(sort.get(j));
+                    }
+                }
+                if (node.left != null) {
+                    queue.add(node.left);
+                }
+                if (node.right != null) {
+                    queue.add(node.right);
+                }
+            }
+        }
+        return 0;
+    }
+//----------------------------
+    public int subarrayLCM(int[] nums, int k) {
+        int res = 0;
+        for (int i = 0; i < nums.length; i++) {
+            int tmp = 1;
+            for (int j = i; j < nums.length; j++) {
+                tmp = getCM(tmp, nums[j]);
+                if (tmp > k) {
+                    break;
+                }
+                if (tmp == k) {
+                    res += 1;
+                }
+            }
+        }
+        return res;
+    }
+
+    public static int getCM(int m, int n) {
+        int max = Math.max(m, n);
+        for (int i = max; i <= m * n; i++) {
+            if (i % m == 0 && i % n == 0) {
+                return i;
+            }
+        }
+        return -1;
+    }
+//--------------------
+    public double[] convertTemperature(double celsius) {
+        return new double[]{celsius + 273.15, celsius * 1.8 + 32};
+    }
+
+
+}