Update README_EN.md

Author: acbin

solution/0400-0499/0488.Zuma Game/README_EN.md

@@ -102,8 +102,7 @@ class Solution:
         return -1
 ```
 
-```Java
-
+```java
 class Solution {
     public int findMinStep(String board, String hand) {
         final Zuma zuma = Zuma.create(board, hand);
@@ -116,29 +115,27 @@ class Solution {
     }
 
     private int bfs(ArrayList<Zuma> curr, int k, HashSet<Long> visited) {
-        if (curr.isEmpty())
+        if (curr.isEmpty()) {
             return -1;
+        }
 
         final ArrayList<Zuma> next = new ArrayList<>();
 
         for (Zuma zuma : curr) {
             ArrayList<Zuma> neib = zuma.getNextLevel(k, visited);
-            if (neib == null)
+            if (neib == null) {
                 return k + 1;
+            }
 
             next.addAll(neib);
         }
         return bfs(next, k + 1, visited);
     }
 }
 
-
 record Zuma(long board, long hand) {
     public static Zuma create(String boardStr, String handStr) {
-        return new Zuma(
-            Zuma.encode(boardStr, false),
-            Zuma.encode(handStr, true)
-        );
+        return new Zuma(Zuma.encode(boardStr, false), Zuma.encode(handStr, true));
     }
 
     public ArrayList<Zuma> getNextLevel(int depth, HashSet<Long> visited) {
@@ -150,15 +147,18 @@ record Zuma(long board, long hand) {
         for (long[] pair : handList) {
             for (int i = 0; i < size; ++i) {
                 final long rawBoard = pruningCheck(boardList[i], pair[0], i * 3, depth);
-                if (rawBoard == -1)
+                if (rawBoard == -1) {
                     continue;
+                }
 
                 final long nextBoard = updateBoard(rawBoard);
-                if (nextBoard == 0)
+                if (nextBoard == 0) {
                     return null;
+                }
 
-                if (pair[1] == 0 || visited.contains(nextBoard))
+                if (pair[1] == 0 || visited.contains(nextBoard)) {
                     continue;
+                }
 
                 visited.add(nextBoard);
                 next.add(new Zuma(nextBoard, pair[1]));
@@ -171,8 +171,7 @@ record Zuma(long board, long hand) {
         final long L = (insBoard >> (pos + 3)) & 0x7;
         final long R = (insBoard >> (pos - 3)) & 0x7;
 
-        if (depth == 0 && (ball != R) && (L != R) ||
-            depth  > 0 && (ball != R)) {
+        if (depth == 0 && (ball != R) && (L != R) || depth > 0 && (ball != R)) {
             return -1;
         }
         return insBoard | (ball << pos);
@@ -183,21 +182,20 @@ record Zuma(long board, long hand) {
 
         for (int i = 0; i < 64; i += 3) {
             final long curr = (board >> i) & 0x7;
-            final long top  = (stack) & 0x7;
+            final long top = (stack) &0x7;
 
             // pop (if possible)
-            if ((top > 0) && (curr != top) &&
-                (stack & 0x3F) == ((stack >> 3) & 0x3F))
-            {
+            if ((top > 0) && (curr != top) && (stack & 0x3F) == ((stack >> 3) & 0x3F)) {
                 stack >>= 9;
-                if ((stack & 0x7) == top)
-                    stack >>= 3;
+                if ((stack & 0x7) == top) stack >>= 3;
             }
 
-            if (curr == 0)
-                break;                        // done
-            else
-                stack = (stack << 3) | curr;  // push and continue
+            if (curr == 0) {
+                // done
+                break;
+            }
+            // push and continue
+            stack = (stack << 3) | curr;
         }
         return stack;
     }
@@ -209,15 +207,14 @@ record Zuma(long board, long hand) {
 
         for (int i = 0; i < 16; i += 3) {
             final long currBall = (this.hand >> i) & 0x7;
-            if (currBall == 0)
+            if (currBall == 0) {
                 break;
+            }
 
             if (currBall != prevBall) {
                 prevBall = currBall;
-                handList.add(new long[]{
-                    currBall,
-                    ((this.hand >> 3) & ~ballMask) | (this.hand & ballMask)
-                });
+                handList.add(
+                    new long[] {currBall, ((this.hand >> 3) & ~ballMask) | (this.hand & ballMask)});
             }
             ballMask = (ballMask << 3) | 0x7;
         }
@@ -232,8 +229,9 @@ record Zuma(long board, long hand) {
 
         while (true) {
             final long currBall = this.board & ballMask;
-            if (currBall == 0)
+            if (currBall == 0) {
                 break;
+            }
 
             ballMask <<= 3;
             insBoard = (insBoard | currBall) & ~ballMask;
@@ -244,8 +242,9 @@ record Zuma(long board, long hand) {
 
     private static long encode(String stateStr, boolean sortFlag) {
         final char[] stateChars = stateStr.toCharArray();
-        if (sortFlag)
+        if (sortFlag) {
             Arrays.sort(stateChars);
+        }
 
         long stateBits = 0;
         for (char ch : stateChars) {
@@ -255,7 +254,7 @@ record Zuma(long board, long hand) {
     }
 
     private static long encode(char ch) {
-        return switch(ch) {
+        return switch (ch) {
             case 'R' -> 0x1;
             case 'G' -> 0x2;
             case 'B' -> 0x3;