add max squre

Author: tg123

maximal-square/README.md

@@ -0,0 +1,46 @@
+public class Solution {
+    
+    int maximalSquare(char[][] matrix, final int x, final int y){
+        int l = 1;
+        
+        done:
+        while(true){
+        
+            for(int i = 0; i <= l; i++){
+                
+                if(x + l >= matrix.length || y + l >= matrix[0].length){
+                    break done;
+                }
+                
+                
+                if(matrix[x + l][y + i] != '1'){
+                    break done;
+                }
+                
+                if(matrix[x + i][y + l] != '1'){
+                    break done;
+                }
+                
+            }
+            
+            l++;
+        }
+        
+        return l * l;
+    }
+    
+    public int maximalSquare(char[][] matrix) {
+        
+        int max = 0;
+        
+        for(int x = 0; x < matrix.length; x++){
+            for(int y = 0; y < matrix[0].length; y++){
+                if(matrix[x][y] == '1'){
+                    max = Math.max(max, maximalSquare(matrix, x, y));
+                }
+            }
+        }
+        
+        return max;
+    }
+}

maximal-square/Solution.java

@@ -0,0 +1,7 @@
+---
+layout: solution
+title: Maximal Square
+date: 2015-06-04 23:46:46+08:00
+leetcode_id: 221
+---
+{% include_relative README.md %}