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function.2.cpp

@@ -0,0 +1,52 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<time.h>
+ 
+int main(){
+	
+	srand(time(NULL));
+	int board[9][9];
+	
+	int num[9]={1,2,3,4,5,6,7,8,9};
+	for(int i =0;i<9;i++)
+	{
+		if(i%3==0)
+		{
+			for(int j =0;j<9;j++)
+			{
+				int k =rand()%9;
+				int temp = num[j];
+				num[j] = num[k];
+				num[k] = temp;
+			}
+		}
+		for(int j = 0;j<9;j++)          //定义矩阵各元素为0 
+		{
+			board[i][j] = 0;
+		}
+		for(int m = 0;m<3;m++)
+		{
+			int index;
+			do{
+				index = rand()%9;
+			}while(board[i][index]!=0);
+			board[i][index] = num[3*(i%3)+m];
+		}	
+	}
+
+ printf("The original Sudoku matrix: \n");   //格式化输出 
+	for(int i=0;i<9;i++){
+		if(i%3==0){
+			printf("-------------\n");
+		}
+		for(int j=0;j<9;j++){
+			if(j%3==0||j==9){
+				printf("|");
+			}
+			printf("%d",board[i][j]);
+		}
+		printf("|\n");
+	}printf("-------------\n"); 
+	
+	return 0;
+	}