ADD file via upload

part 3.c

@@ -0,0 +1,144 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+//void shuchu(int a[9][9]) {
+//	for (int i = 0; i < 9; i++) {
+//		if (i % 3 == 0) {
+//			printf("|");
+//			for (int j = 0; j < 23; j++) {
+//				printf("-");
+//			}
+//			printf("|\n");
+//		}
+//		for (int j = 0; j < 9; j++) {
+//			if (j % 3 == 0)
+//				printf("| ");
+//			printf("%d ", a[i][j]);
+//			if (j == 8)
+//				printf("| ");
+//		}
+//		printf("\n");
+//		if (i == 8) {
+//			printf("|");
+//			for (int j = 0; j < 23; j++) {
+//				printf("-");
+//			}
+//			printf("|");
+//
+//		}
+//	}
+//}
+
+//void MakeRand(int arr[], int count) {
+//	srand((unsigned int)time(NULL));
+//	for (int i = 0; i < count; i++) {
+//		int num = i + rand() % (count - i);
+//		int temp = arr[i];
+//		arr[i] = arr[num];
+//		arr[num] = temp;
+//	}
+//}
+
+void shudu(int a[9][9]) {
+	int flag = 0;
+	int z = 0;
+	int i, j, k, l;
+	int count[10] = {0};
+	int m[9];
+	for (i = 0; i < 9; i++) {
+		int count[10] = {0};
+		for (j = 0; j < 9; j++) {
+			if (a[i][j] != 0)
+				count[a[i][j]]++;
+		}
+		for (j = 0; j < 9; j++) {
+			if (count[j + 1] >= 2) {
+				flag = 1;
+				z = j + 1;
+				break;
+			}
+		}
+		if (flag == 1)
+			break;
+	}
+	if (flag == 1) {
+		printf("False:Invalid initialSudoku matrix\nThe number %d in the row %d has been used!,z,j");
+		return ;
+	}
+	for (i = 0; i < 9; i++) {
+		int count[10] = {0};
+		for (j = 0; j < 9; j++) {
+			if (a[j][i] != 0)
+				count[a[j][i]]++;
+		}
+		for (j = 0; j < 9; j++) {
+			if (count[j + 1] >= 2) {
+				flag = 1;
+				z = j + 1;
+				break;
+			}
+		}
+		if (flag == 1)
+			break;
+	}
+	if (flag == 1) {
+		printf("FalseInvalid initial Sudoku matrix\nThe number %d in the col %d has been used!", z, j);
+		return ;
+	}
+	for (i = 0; i < 3; i++) {
+		for (j = 0; j < 3; j++) {
+			for (k = 0; k < 3; k++) {
+				for (l = 0; l < 3; l++) {
+					m[k * 3 + l] = a[j * 3 + k][i * 3 + l];
+				}
+			}
+			for (k = 0; k < 9; k++)
+				count[k] = 0;
+			for (k = 0; k < 9; k++) {
+				if (m[k] != 0)
+					count[m[k]]++;
+			}
+			for (k = 0; k < 9; k++) {
+				if (count[k] >= 2) {
+					flag = 1;
+					z = k;
+					break;
+				}
+			}
+			if (flag == 1)
+				break;
+		}
+		if (flag == 1)
+			break;
+	}
+	if (flag == 1) {
+		printf("False:Invalid initial Sudoku matrix!\nThe number %d in the block %d has been used!", z, j);
+		return ;
+	} else
+		printf("Ture:Valid initial sudoku matrix");
+}
+
+int main() {
+	int board0[9][9] = {{5, 3, 0, 0, 7, 0, 0, 0, 0},
+		{6, 0, 0, 1, 9, 5, 0, 0, 0},
+		{0, 9, 8, 0, 0, 0, 0, 6, 0},
+		{8, 0, 0, 0, 6, 0, 0, 0, 3},
+		{4, 0, 0, 8, 0, 3, 0, 0, 1},
+		{7, 0, 0, 0, 2, 0, 0, 0, 6},
+		{0, 6, 0, 0, 0, 0, 2, 8, 0},
+		{0, 0, 0, 4, 1, 9, 0, 0, 5},
+		{0, 0, 0, 0, 8, 0, 0, 7, 9}
+	};
+	printf("The original Sudoku matrix:\n");
+	for (int i = 0; i < 9; i++) {
+		for (int j = 0; j < 9; j++) {
+			printf("%d ", board0[i][j]);
+		}
+		printf("\n");
+	}
+	printf("\n");
+	shudu(board0);
+
+
+}