移动一根火柴使等式成立

#include 
#include 
#define N 22

int numCode[10][7] = {	1, 1, 1, 1, 1, 1, 0,        				//0
						0, 1, 1, 0, 0, 0, 0,        				//1
						1, 1, 0, 1, 1, 0, 1,                        //2
						1, 1, 1, 1, 0, 0, 1,                        //3
						0, 1, 1, 0, 0, 1, 1,                        //4
						1, 0, 1, 1, 0, 1, 1,                        //5
						1, 0, 1, 1, 1, 1, 1,                        //6
						1, 1, 1, 0, 0, 0, 0,                        //7
						1, 1, 1, 1, 1, 1, 1,                        //8
						1, 1, 1, 1, 0, 1, 1, };                     //9

int stickCode[N];
int kinds;

int getNumber(int *p){
	
	int i,j;
	
	for (i = 0; i < 10; i++){
		for (j = 0; j < 7; j++){
			if (p[j] != numCode[i][j]){
				break;
			}
			if (j == 6){
				return i;
			}
	    }
    }

	return -1;
}


void getStickCode(int num1, char oper, int num2, int num3){

	int i;
	int j;
	for (i = 0; i < N; i++){
		if (i < 7){
			j = i;
			stickCode[i] = numCode[num1][j];
		}
		else if (i < 14){
			j = i - 7;
			stickCode[i] = numCode[num2][j];
		}
		else if (i < 21){
			j = i - 14;
			stickCode[i] = numCode[num3][j];
        }
		else {
			if (oper == '+'){
				stickCode[i] = 1;
			}
			else {
				stickCode[i] = 0;
			}
		}
	}

}
void checkEquation(int *stickCodeAfterMove){
	
	int num1;
	int num2;
	int num3;
	int *p = stickCodeAfterMove;
	num1 = getNumber(p);
	num2 = getNumber(p + 7);
	num3 = getNumber(p + 14);
	if (num1 == -1 || num2 == -1 || num3 == -1){
		return ;
    }
	if (p[21] == 1 && (num1 + num2 == num3)){
		printf("%d + %d = %d\n", num1, num2, num3);
		kinds++;
	}
	else if (p[21] == 0 && (num1 - num2 == num3)){
		printf("%d - %d = %d\n", num1, num2, num3);
		kinds++;
	}
	else {
		return ;
	}
}
int main(){
	
	int stickCodeAfterMove[N];
	
	getStickCode(1, '+', 0, 7);
	memcpy(stickCodeAfterMove, stickCode, sizeof(stickCode));
	
	int i,j;
    for (i = 0; i < N; i++){
    	if (stickCode[i] == 1){
    		//取出火柴
    		stickCodeAfterMove[i] = 0;
       
            //尝试去放火柴
		    for (j = 0; j < N; j++){
		    	if (stickCodeAfterMove[j] == 0){
		    		//找到空位放入火柴
					stickCodeAfterMove[j] = 1;
					//判断等式是否成立
					checkEquation(stickCodeAfterMove);
					//收回放入的火柴
					stickCodeAfterMove[j] = 0;
		        }

			}
			//把火柴放回原处
			stickCodeAfterMove[i] = 1;
		}
	}
	
	if (kinds == 0){
		printf("无法移动火柴使等式成立!\n");
	}
	
	
	return 0;
}