Merge branch 'master' of https://gitee.com/huangge1199_admin/leet-code

 Conflicts:

	src/main/java/leetcode/editor/cn/all.json

src/main/java/com/code/leet/contest/contest1/Solution1.java

@@ -1,6 +1,4 @@
-package com.code.leet.contest1;
+package com.code.leet.contest.contest1;
-
-import java.util.*;
 
 public class Solution1 {
     public static void main(String[] args) {

src/main/java/com/code/leet/contest/contest1/Solution2.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest1;
+package com.code.leet.contest.contest1;
 
 import java.util.*;
 

src/main/java/com/code/leet/contest/contest1/Solution3.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest1;
+package com.code.leet.contest.contest1;
 
 import com.code.leet.entiy.ListNode;
 

src/main/java/com/code/leet/contest/contest1/Solution4.java

@@ -1,6 +1,4 @@
-package com.code.leet.contest1;
+package com.code.leet.contest.contest1;
-
-import java.util.Arrays;
 
 public class Solution4 {
     public static void main(String[] args) {

src/main/java/com/code/leet/contest/contest1/Solution5.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest1;
+package com.code.leet.contest.contest1;
 
 public class Solution5 {
     public static void main(String[] args) {

src/main/java/com/code/leet/contest/contest1/Solution6.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest1;
+package com.code.leet.contest.contest1;
 
 import java.util.Arrays;
 import java.util.LinkedList;

src/main/java/com/code/leet/contest/contest2/Solution1.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest2;
+package com.code.leet.contest.contest2;
 
 import java.util.Arrays;
 

src/main/java/com/code/leet/contest/contest2/Solution2.java

@@ -1,6 +1,4 @@
-package com.code.leet.contest2;
+package com.code.leet.contest.contest2;
-
-import java.util.*;
 
 public class Solution2 {
     public static void main(String[] args) {

src/main/java/com/code/leet/contest/contest2/Solution3.java

@@ -1,6 +1,4 @@
-package com.code.leet.contest2;
+package com.code.leet.contest.contest2;
-
-import com.code.leet.entiy.ListNode;
 
 import java.util.ArrayList;
 import java.util.List;

src/main/java/com/code/leet/contest/contest2/Solution4.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest2;
+package com.code.leet.contest.contest2;
 
 import java.util.*;
 

src/main/java/com/code/leet/contest/contest2/Solution5.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest2;
+package com.code.leet.contest.contest2;
 
 import java.util.ArrayList;
 import java.util.List;

src/main/java/com/code/leet/contest/contest2/Solution6.java

@@ -1,7 +1,6 @@
-package com.code.leet.contest2;
+package com.code.leet.contest.contest2;
 
 import java.util.*;
-import java.util.stream.Collectors;
 
 public class Solution6 {
     public static void main(String[] args) {

src/main/java/com/code/leet/contest/contest3/Solution1.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest3;
+package com.code.leet.contest.contest3;
 
 import com.code.leet.entiy.TreeNode;
 

src/main/java/com/code/leet/contest/contest3/Solution2.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest3;
+package com.code.leet.contest.contest3;
 
 import com.code.leet.entiy.TreeNode;
 

src/main/java/com/code/leet/contest/contest3/Solution3.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest3;
+package com.code.leet.contest.contest3;
 
 import com.code.leet.entiy.TreeNode;
 

src/main/java/com/code/leet/contest/contest3/Solution4.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest3;
+package com.code.leet.contest.contest3;
 
 import com.code.leet.entiy.TreeNode;
 

src/main/java/com/code/leet/contest/contest3/Solution5.java

@@ -1,4 +1,4 @@
-package com.code.leet.contest3;
+package com.code.leet.contest.contest3;
 
 import com.code.leet.entiy.TreeNode;
 

src/main/java/com/code/leet/contest/contest4/Solution1.java

@@ -0,0 +1,50 @@
+package com.code.leet.contest.contest4;
+
+import javafx.util.Pair;
+
+import java.util.*;
+
+public class Solution1 {
+    public static void main(String[] args) {
+        Solution1 solution = new Solution1();
+    }
+
+    public int countIslands(int[][] grid) {
+        boolean[][] use = new boolean[grid.length][grid[0].length];
+        int count = 0;
+        Queue<Pair<Integer, Integer>> queue = new LinkedList<>();
+        for (int i = 0; i < grid.length; i++) {
+            for (int j = 0; j < grid[0].length; j++) {
+                if(!use[i][j]){
+                    continue;
+                }
+                use[i][j] = true;
+                if (grid[i][j] == 1) {
+                    queue.add(new Pair<>(i, j));
+                    use[i][j] = true;
+                    count++;
+                    while (!queue.isEmpty()) {
+                        Pair<Integer, Integer> pair = queue.poll();
+                        for (int k = -1; k < 2; k++) {
+                            for (int l = -1; l < 2; l++) {
+                                if (k == 0 && l == 0) {
+                                    continue;
+                                }
+                                int x = k + pair.getKey();
+                                int y = l + pair.getValue();
+                                if (x < 0 || x >= grid.length || y < 0 || y > grid[0].length || use[x][y]) {
+                                    continue;
+                                }
+                                use[x][y] = true;
+                                if (grid[x][y] == 1) {
+                                    queue.add(new Pair<>(x,y));
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        return count;
+    }
+}

src/main/java/com/code/leet/contest/contest4/Solution2.java

@@ -0,0 +1,83 @@
+package com.code.leet.contest.contest4;
+
+import java.util.Arrays;
+
+public class Solution2 {
+    public static void main(String[] args) {
+        Solution2 solution = new Solution2();
+        System.out.println(solution.countPlans(new int[]{31,18,-11,13},20));
+    }
+
+//    public int countPlans(int[] nums, int target) {
+//        Arrays.sort(nums);
+//        if (nums[0] > target) {
+//            return 0;
+//        }
+//        if (nums[0] >= 0 || nums[nums.length - 1] <= 0) {
+//            return count(0, nums.length, target, nums);
+//        }
+//        int c0 = 0;
+//        int index = 0;
+//        for (int i = 0; i < nums.length; i++) {
+//            if (nums[i] == 0) {
+//                c0++;
+//            } else if (nums[i] > 0) {
+//                index = i;
+//                break;
+//            }
+//        }
+//        int count = 0;
+//        for (int i = 0; i < index - c0; i++) {
+//            count += countPlans(Arrays.copyOfRange(nums, i + 1, nums.length), target - nums[i]);
+//        }
+//
+//        count += count(index, nums.length, target, nums);
+//        return count;
+//    }
+//
+//    private int count(int start, int end, int target, int[] nums) {
+//        Queue<Integer> queue = new LinkedList<>();
+//        queue.add(nums[start]);
+//        int sum = nums[start];
+//        int count = 0;
+//        for (int i = start + 1; i < end; i++) {
+//            sum += nums[i];
+//            queue.add(nums[i]);
+//            while (!queue.isEmpty() && sum > target) {
+//                sum -= queue.poll();
+//            }
+//            if (sum == target) {
+//                count++;
+//            }
+//            if (queue.isEmpty()) {
+//                break;
+//            }
+//        }
+//        return count;
+//    }
+
+    int count = 0;
+    public int countPlans(int[] nums, int target) {
+        Arrays.sort(nums);
+        count(nums, target, 0, 0);
+        return count;
+    }
+
+    private void count(int[] nums, int target, int sum, int index) {
+        if (sum == target) {
+            count++;
+            return;
+        }
+        if (sum > target) {
+            return;
+        }
+        if (index == nums.length) {
+            return;
+        }
+        int count = 0;
+        for (int i = index; i < nums.length; i++) {
+            count(nums, target, sum + nums[i], index + 1);
+            count(nums, target, sum, index + 1);
+        }
+    }
+}

src/main/java/com/code/leet/contest/contest4/Solution3.java

@@ -0,0 +1,44 @@
+package com.code.leet.contest.contest4;
+
+import com.code.leet.entiy.TreeNode;
+
+import java.util.*;
+
+public class Solution3 {
+    public static void main(String[] args) {
+        Solution3 solution = new Solution3();
+    }
+
+    public int[][] solve(TreeNode root) {
+        if (root == null) {
+            return null;
+        }
+        Queue<TreeNode> queue = new LinkedList<>();
+        queue.add(root);
+        List<List<Integer>> list = new ArrayList<>();
+        while (!queue.isEmpty()) {
+            int size = queue.size();
+            List<Integer> temp = new ArrayList<>();
+            for (int i = 0; i < size; i++) {
+                TreeNode node = queue.poll();
+                temp.add(node.val);
+                if (node.right != null) {
+                    queue.add(node.right);
+                }
+                if (node.left != null) {
+                    queue.add(node.left);
+                }
+            }
+            list.add(temp);
+        }
+        int[][] arr = new int[list.size()][];
+        for (int i = 0; i < list.size(); i++) {
+            List<Integer> temp = list.get(i);
+            arr[i] = new int[temp.size()];
+            for (int j = 0; j < temp.size(); j++) {
+                arr[i][j] = temp.get(j);
+            }
+        }
+        return arr;
+    }
+}

src/main/java/com/code/leet/contest/contest4/Solution4.java

@@ -0,0 +1,58 @@
+package com.code.leet.contest.contest4;
+
+import javafx.util.Pair;
+
+import java.util.*;
+
+public class Solution4 {
+    public static void main(String[] args) {
+        Solution4 solution = new Solution4();
+    }
+
+    public int getDistance(String[] maze) {
+        int[] xIndex = new int[]{-1, 1, 0, 0};
+        int[] yIndex = new int[]{0, 0, -1, 1};
+        char[][] chs = new char[maze.length][maze[0].length()];
+        for (int i = 0; i < maze.length; i++) {
+            chs[i] = maze[i].toCharArray();
+        }
+        boolean[][] use = new boolean[maze.length][maze[0].length()];
+        Pair<Integer, Integer> start = null;
+        for (int i = 0; i < chs.length; i++) {
+            for (int j = 0; j < chs[0].length; j++) {
+                if (chs[i][j] == 'X') {
+                    use[i][j] = true;
+                }
+                if (chs[i][j] == 'S') {
+                    use[i][j] = true;
+                    start = new Pair<>(i, j);
+                }
+            }
+        }
+        Queue<Pair<Integer, Integer>> queue = new LinkedList<>();
+        queue.add(start);
+        int count = 0;
+        while (!queue.isEmpty()) {
+            int size = queue.size();
+            count++;
+            for (int i = 0; i < size; i++) {
+                Pair<Integer, Integer> pair = queue.poll();
+                for (int j = 0; j < 4; j++) {
+                    int x = pair.getKey() + xIndex[j];
+                    int y = pair.getValue() + yIndex[j];
+                    if (x < 0 || x >= chs.length || y < 0 || y >= chs[0].length || use[x][y]) {
+                        continue;
+                    }
+                    if (chs[x][y] == '.') {
+                        queue.add(new Pair<>(x, y));
+                        use[x][y] = true;
+                    }
+                    if(chs[x][y]=='E'){
+                        return count;
+                    }
+                }
+            }
+        }
+        return -1;
+    }
+}

src/main/java/com/code/leet/contest/contest4/Solution5.java

@@ -0,0 +1,40 @@
+package com.code.leet.contest.contest4;
+
+import javafx.util.Pair;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class Solution5 {
+    public static void main(String[] args) {
+        Solution5 solution = new Solution5();
+        solution.shiftMatrix(new int[][]{{1,2,3},{4,5,6},{7,8,9}},new int[][]{{3,1,9},{4,5,2},{7,8,6}});
+    }
+
+    public int shiftMatrix(int[][] source, int[][] target) {
+        Map<Integer, Pair<Integer, Integer>[]> map = new HashMap<>();
+        for (int i = 0; i < 3; i++) {
+            for (int j = 0; j < 3; j++) {
+                if (source[i][j] != target[i][j]) {
+                    Pair<Integer,Integer> pair = new Pair<>(i,j);
+                    Pair[] temp = map.getOrDefault(source[i][j], new Pair[2]);
+                    temp[0] = pair;
+                    map.put(source[i][j],temp);
+                    temp = map.getOrDefault(target[i][j], new Pair[2]);
+                    temp[1] = pair;
+                    map.put(target[i][j],temp);
+                }
+            }
+        }
+        int max = 0;
+        for (int key : map.keySet()) {
+            Pair<Integer, Integer>[] pairs = map.get(key);
+            int x = pairs[1].getKey() - pairs[0].getKey();
+            int y = pairs[1].getValue() - pairs[0].getValue();
+            x = x >= 0 ? x : x + 3;
+            y = y >= 0 ? y : y + 3;
+            max = Math.max(x + y, max);
+        }
+        return max;
+    }
+}

src/main/java/com/code/leet/contest/contest4/Solution6.java

@@ -0,0 +1,68 @@
+package com.code.leet.contest.contest4;
+
+import javafx.util.Pair;
+
+import java.util.*;
+
+public class Solution6 {
+    public static void main(String[] args) {
+        Solution6 solution = new Solution6();
+    }
+
+    public int getDistance(int[][] grid) {
+        int[] xI = new int[]{-1, 1, 0, 0};
+        int[] yIndex = new int[]{0, 0, -1, 1};
+        Queue<Pair<Integer, Integer>> load = new LinkedList<>();
+        boolean[][] use = new boolean[grid.length][grid[0].length];
+        boolean bl = false;
+        for (int i = 0; i < grid.length; i++) {
+            for (int j = 0; j < grid[0].length; j++) {
+                if (grid[i][j] == 1 && !use[i][j]) {
+                    bl = true;
+                    Queue<Pair<Integer, Integer>> queue = new LinkedList<>();
+                    queue.add(new Pair<>(i, j));
+                    while (!queue.isEmpty()) {
+                        Pair<Integer, Integer> pair = queue.poll();
+                        load.add(new Pair<>(pair.getKey(), pair.getValue()));
+                        for (int k = 0; k < 4; k++) {
+                            int x = pair.getKey() + xI[k];
+                            int y = pair.getValue() + yIndex[k];
+                            if (x < 0 || x >= grid.length || y < 0 || y >= grid[0].length || use[x][y]) {
+                                continue;
+                            }
+                            if (grid[x][y] == 1) {
+                                queue.add(new Pair<>(x, y));
+                                use[x][y] = true;
+                            }
+                        }
+                    }
+                    break;
+                }
+            }
+            if (bl) {
+                break;
+            }
+        }
+        int count = 0;
+        while (!load.isEmpty()) {
+            int size = load.size();
+            count++;
+            for (int i = 0; i < size; i++) {
+                Pair<Integer, Integer> pair = load.poll();
+                for (int k = 0; k < 4; k++) {
+                    int x = pair.getKey() + xI[k];
+                    int y = pair.getValue() + yIndex[k];
+                    if (x < 0 || x >= grid.length || y < 0 || y >= grid[0].length || use[x][y]) {
+                        continue;
+                    }
+                    if (grid[x][y] == 1) {
+                        return count;
+                    }
+                    load.add(new Pair<>(x, y));
+                    use[x][y] = true;
+                }
+            }
+        }
+        return 0;
+    }
+}

src/main/java/com/code/leet/doubleWeek/SolutionD58.java

@@ -0,0 +1,74 @@
+package com.code.leet.doubleWeek;
+
+public class SolutionD58 {
+    public static void main(String[] args) {
+        SolutionD58 solution = new SolutionD58();
+//        System.out.println(solution.minimumPerimeter(1000000000));
+        System.out.println(solution.countSpecialSubsequences(new int[]{0, 1, 2, 0, 1, 2}));
+    }
+
+
+    public boolean isThree(int n) {
+        int flag = 0;
+        if (n <= 2) {
+            return false;
+        }
+        int num = n / 2;
+        for (int i = 3; i < num; i++) {
+            if (n % i == 0) {
+                if (flag == 1) {
+                    return false;
+                }
+                flag = 1;
+            }
+        }
+        return flag == 1;
+    }
+
+    public long numberOfWeeks(int[] milestones) {
+        long max = 0;
+        long sum = 0;
+        for (int milestone : milestones) {
+            sum += milestone;
+            max = Math.max(max, milestone);
+        }
+        return sum / max >= 2 ? sum : (sum - max) * 2 + 1;
+    }
+
+    public long minimumPerimeter(long neededApples) {
+        if (neededApples == 0) {
+            return 0;
+        }
+        if (neededApples < 12) {
+            return 8;
+        }
+        long n = 2;
+        long cur = 12;
+        long sum = 12;
+        while (sum < neededApples) {
+            cur = cur + 12 * (n + 1);
+            sum += cur;
+            n += 2;
+        }
+        return 4 * n;
+    }
+
+    public int countSpecialSubsequences(int[] nums) {
+        long[] result = new long[3];
+        long[] counts = new long[nums.length];
+        for (int i = nums.length - 1; i >= 0; i--) {
+            int num = nums[i];
+            if (num == 1) {
+                counts[i] = result[2];
+                result[num] += counts[i];
+            } else if (num == 0) {
+                result[num] = result[1] * result[2];
+            } else {
+
+            }
+        }
+//            return (int) (result[0][2] % 100000007);
+        return 0;
+    }
+
+}

src/main/java/leetcode/editor/cn/PathInZigzagLabelledBinaryTree.java

@@ -0,0 +1,104 @@
+//在一棵无限的二叉树上，每个节点都有两个子节点，树中的节点 逐行 依次按 “之” 字形进行标记。 
+//
+// 如下图所示，在奇数行（即，第一行、第三行、第五行……）中，按从左到右的顺序进行标记； 
+//
+// 而偶数行（即，第二行、第四行、第六行……）中，按从右到左的顺序进行标记。 
+//
+// 
+//
+// 给你树上某一个节点的标号 label，请你返回从根节点到该标号为 label 节点的路径，该路径是由途经的节点标号所组成的。 
+//
+// 
+//
+// 示例 1： 
+//
+// 输入：label = 14
+//输出：[1,3,4,14]
+// 
+//
+// 示例 2： 
+//
+// 输入：label = 26
+//输出：[1,2,6,10,26]
+// 
+//
+// 
+//
+// 提示： 
+//
+// 
+// 1 <= label <= 10^6 
+// 
+// Related Topics 树 数学 二叉树 
+// 👍 144 👎 0
+
+package leetcode.editor.cn;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+//1104:二叉树寻路
+class PathInZigzagLabelledBinaryTree {
+    public static void main(String[] args) {
+        //测试代码
+        Solution solution = new PathInZigzagLabelledBinaryTree().new Solution();
+        solution.pathInZigZagTree(14);
+    }
+
+    //力扣代码
+    //leetcode submit region begin(Prohibit modification and deletion)
+    class Solution {
+        public List<Integer> pathInZigZagTree(int label) {
+            int max = 1;
+            int index = 1;
+            while (max * 2 < label) {
+                max = max * 2;
+                index++;
+            }
+            List<Integer> list = new ArrayList<>();
+            list.add(label);
+            if (max != label) {
+                index--;
+            }
+            max = max * 3;
+            for (int i = index; i > 0; i--) {
+                label = (max - 1 - label) / 2;
+                list.add(label);
+                max /= 2;
+            }
+            Collections.reverse(list);
+            return list;
+        }
+
+
+//        public List<Integer> pathInZigZagTree(int label) {
+//            int row = 1, rowStart = 1;
+//            while (rowStart * 2 <= label) {
+//                row++;
+//                rowStart *= 2;
+//            }
+//            if (row % 2 == 0) {
+//                label = getReverse(label, row);
+//            }
+//            List<Integer> path = new ArrayList<Integer>();
+//            while (row > 0) {
+//                if (row % 2 == 0) {
+//                    path.add(getReverse(label, row));
+//                } else {
+//                    path.add(label);
+//                }
+//                row--;
+//                label >>= 1;
+//            }
+//            Collections.reverse(path);
+//            return path;
+//        }
+//
+//        public int getReverse(int label, int row) {
+//            return (1 << row - 1) + (1 << row) - 1 - label;
+//        }
+    }
+//leetcode submit region end(Prohibit modification and deletion)
+
+}

src/main/java/leetcode/editor/cn/PathInZigzagLabelledBinaryTree.md

@@ -0,0 +1,32 @@
+<p>在一棵无限的二叉树上，每个节点都有两个子节点，树中的节点 <strong>逐行</strong> 依次按&nbsp;&ldquo;之&rdquo; 字形进行标记。</p>
+
+<p>如下图所示，在奇数行（即，第一行、第三行、第五行&hellip;&hellip;）中，按从左到右的顺序进行标记；</p>
+
+<p>而偶数行（即，第二行、第四行、第六行&hellip;&hellip;）中，按从右到左的顺序进行标记。</p>
+
+<p><img alt="" src="https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2019/06/28/tree.png" style="height: 138px; width: 300px;"></p>
+
+<p>给你树上某一个节点的标号 <code>label</code>，请你返回从根节点到该标号为 <code>label</code> 节点的路径，该路径是由途经的节点标号所组成的。</p>
+
+<p>&nbsp;</p>
+
+<p><strong>示例 1：</strong></p>
+
+<pre><strong>输入：</strong>label = 14
+<strong>输出：</strong>[1,3,4,14]
+</pre>
+
+<p><strong>示例 2：</strong></p>
+
+<pre><strong>输入：</strong>label = 26
+<strong>输出：</strong>[1,2,6,10,26]
+</pre>
+
+<p>&nbsp;</p>
+
+<p><strong>提示：</strong></p>
+
+<ul>
+	<li><code>1 &lt;= label &lt;= 10^6</code></li>
+</ul>
+<div><div>Related Topics</div><div><li>树</li><li>数学</li><li>二叉树</li></div></div>\n<div><li>👍 144</li><li>👎 0</li></div>