2025-02-16 回文串、斗地主

src/dataANDcalc/java/leetcode/Huiwenchuan.java

@@ -0,0 +1,40 @@
+package leetcode;
+
+public class Huiwenchuan {
+
+    private String longestPalindrome(String str){
+        int length = str.length();
+        char[] charArray = str.toCharArray();
+        boolean[][] dp = new boolean[length][length];
+        for(int i = 0; i<length; i++){
+            dp[i][i] = true;
+        }
+
+        int begin = 0;
+        int max = 1;
+        for(int i = 0; i<length; i++){
+            for(int j=0; j<i; j++){
+                if(charArray[i] != charArray[j]){
+                    dp[i][j] = false;
+                } else {
+                    if(i-1-(j+1)<2){
+                        dp[i][j] = true;
+                    } else {
+                        dp[i][j] = dp[i-1][j+1];
+                    }
+                }
+
+                if(dp[i][j] && i-j+1>max){
+                    begin = j;
+                    max = i-j+1;
+                }
+            }
+        }
+        return str.substring(begin, begin+max);
+    }
+
+    public static void main(String[] args) {
+        Huiwenchuan huiwenchuan = new Huiwenchuan();
+        System.out.println(huiwenchuan.longestPalindrome("abacab"));
+    }
+}

src/huawei/java/Doudizhu.java

@@ -0,0 +1,95 @@
+import java.util.*;
+
+public class Doudizhu {
+
+
+    private void shunzi(String pai){
+        String[] strArr = pai.split(" ");
+        int[] arr = new int[strArr.length];
+        for(int i = 0; i<strArr.length; i++){
+            if (strArr[i].equals("J")){
+                arr[i] = 11;
+            }
+            else if (strArr[i].equals("Q")){
+                arr[i] = 12;
+            }
+            else if (strArr[i].equals("K")){
+                arr[i] = 13;
+            }
+            else if (strArr[i].equals("A")){
+                arr[i] = 14;
+            }
+            else if (strArr[i].equals("2")){
+                arr[i] = 15;
+            }
+            else {
+                arr[i] = Integer.parseInt(strArr[i]);
+            }
+        }
+        for(int i = 1; i<arr.length; i++){
+            int index = i - 1;
+            int temp = arr[i];
+            while(index >= 0){
+                if(arr[index] > temp){
+                    arr[index + 1] = arr[index];
+                    index --;
+                } else {
+                    break;
+                }
+            }
+            arr[index + 1] = temp;
+        }
+        // 打印扑克
+        for(int i = 0; i<arr.length; i++) {
+            if (arr[i] == 11) {
+                System.out.print("J ");
+            } else if (arr[i] == 12) {
+                System.out.print("Q ");
+            } else if (arr[i] == 13) {
+                System.out.print("K ");
+            } else if (arr[i] == 14) {
+                System.out.print("A ");
+            } else if (arr[i] == 15) {
+                System.out.print("2 ");
+            } else {
+                System.out.print(arr[i] + " ");
+            }
+        }
+
+        Map<Integer, Object> map = new HashMap<>();
+        int start = 0;
+        while(start < arr.length){
+            List<Integer> shunzilist = new ArrayList<>();
+            shunzilist.add(arr[start]);
+            int cur = start + 1;
+            while(cur < arr.length){
+                if(arr[cur] - arr[cur - 1] == 1){
+                    shunzilist.add(arr[cur]);
+                    cur ++;
+                } else if(arr[cur] == arr[cur - 1]){
+                    cur ++;
+                } else {
+                    start = cur;
+                    break;
+                }
+            }
+            map.put(start, shunzilist);
+            start = cur;
+        }
+        for(Map.Entry<Integer, Object> entry : map.entrySet()){
+            List<Integer> list = (List)entry.getValue();
+            System.out.println("顺子：");
+            if(list.size() < 5){
+                continue;
+            }
+            for(int i:list){
+                System.out.print(i + " ");
+            }
+        }
+    }
+
+    public static void main(String[] args) {
+        Doudizhu doudizhu = new Doudizhu();
+        doudizhu.shunzi("2 9 J 2 3 4 K A 7 9 A 5 6");
+    }
+}