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题目3.cpp

@@ -0,0 +1,111 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<time.h>
+int a[10][10]={{0,0,0,0,0,0,0,0,0,0},
+{0,5, 3, 0, 0, 7, 0, 0, 0, 0},
+{0,6, 0, 0, 1, 9, 5, 0, 0, 0},
+{0,0, 9, 8, 0, 0, 0, 0, 6, 0},
+{0,8, 0, 0, 0, 6, 0, 0, 0, 3},
+{0,4, 0, 0, 8, 0, 3, 0, 0, 1},
+{0,7, 0, 0, 0, 2, 0, 0, 0, 6},
+{0,0, 6, 0, 0, 0, 0, 2, 8, 0},
+{0,0, 0, 0, 4, 1, 9, 0, 0, 5},
+{0,0, 0, 0, 0, 8, 0, 0, 7, 9}};;
+int e,f,g;
+void format(int s[][10])
+{
+    printf("-------------------------\n");
+    for(int i=1;i<10;i++)
+    {
+    	printf("| ");
+        for(int j=1;j<10;j++)
+        {
+        	
+        	printf("%d ",s[i][j]);
+        	if(j%3==0) printf("| ");
+		}
+		printf("\n");
+		if(i%3==0) printf("-------------------------\n");
+    }
+}
+bool ok(int x,int y,int s[][10])
+{
+	int b=s[x][y];
+	int a1=x,a2=y;
+	for(int j=1;j<=9;j++)
+	{
+		if(j==y) continue;
+		if(s[x][j]==b)
+		{
+			e=0;f=x;g=b;
+			return false;
+		}
+	}
+	for(int i=1;i<=9;i++)
+	{
+		if(i==x) continue;
+		if(s[i][y]==b)
+		{
+			e=1;f=y;g=b;
+			return false;
+		}
+	}
+	x=(x-1)/3*3;
+	y=(y-1)/3*3;
+	int block;
+	if(x+1==1)
+	{
+		if(y+1==1) block=1;
+		else if(y+1==4) block=2;
+		else if(y+1==7) block=3;
+	}
+	else if(x+1==4)
+	{
+		if(y+1==1) block=4;
+		else if(y+1==4) block=5;
+		else if(y+1==7) block=6;
+	}
+	else if(x+1==7)
+	{
+		if(y+1==1) block=7;
+		else if(y+1==4) block=8;
+		else if(y+1==7) block=9;
+	}
+	for(int i=x+1;i<x+4;i++)
+    {
+        for(int j=y+1;j<y+4;j++)
+        {
+        	if(a1==i&&a2==j) continue;
+            if(s[i][j]==b)
+            {
+            	e=2;f=block;g=b;
+            	return false;
+			}
+        }
+    }
+    return true;
+}
+int main()
+{
+	int d=1;
+	srand(time(NULL));
+    printf("The original Sudoku matrix:\n");
+    format(a);
+    for(int i=1;i<=9;i++)
+     for(int j=1;j<=9;j++)
+     {
+     	if(a[i][j])
+     	{
+     		if(!ok(i,j,a))
+			 {
+			 	printf("False:Invalid initial Sudoku matrix!\n");
+			 	if(e==1) printf("The number %d in the col %d has been used!",g,f);
+				else if(e==0) printf("The number %d in the row %d has been used!",g,f);
+				else if(e==2) printf("The number %d in the block %d has been used!",g,f);
+			 	return 0;
+			 } 
+		 }
+	 }
+	printf("True:Valid initial Sudoku matrix!\n");
+    return 0;
+}