Question

我有一个5 x 10 char矩阵，我想压缩它就像运行长度编码一样。

    printf("Enter your data (5x10) of characters: \n");
    for (i = 0; i < SIZE1; i++)
    for (j = 0; j < SIZE2; j++)
        scanf("%c", &matrix2[i][j]);
    printf("\n");
    compress(matrix2);
    break;  

void compress(char data[SIZE1][SIZE2])
{
    int row, column, count=1;
    for (row = 0; row < SIZE1; row++)
    {
        for (column = 0; column < SIZE2; column++)
        {
            if (data[row][column] == data[row][column + 1])
            {
                count++;
            }
            else
            {
                printf("%c%d", data[row][column], count);
                count = 1;
            }
        }
    }
}

这是我的代码，但我不明白为什么我的输出总是在前面有1。输入：

aaabbbcccd
aabbccddee
aaaaaaaaaa
abcabcabca
aaabbbcccc

输出：

a3b3c3d1
1a2b2c2d2e2
1a10
1a1b1c1a1b1c1a1b1c1a1
1a3b3

预期产出：

a3b3c3d1
a2b2c2d2e2
a10
a1b1c1a1b1c1a1b1c1a1
a3b3c4

Answer 1

它也在计算换行符。

Answer 2

我相信评论者提出了这样的改变：

    printf("Enter your data (5x10) of characters: \n");
    for (i = 0; i < SIZE1; i++)
    for (j = 0; j < SIZE2; j++)
        scanf("%c", &matrix2[i][j]);
    printf("\n");
    compress(matrix2);
    break;  

void compress(char data[SIZE1][SIZE2])
{
    int row, column, count=1;
    for (row = 0; row < SIZE1; row++)
    {
        for (column = 0; column < SIZE2; column++)
        {
            if (data[row][column] == data[row][column + 1])
            {
                count++;
            }
            else
            {
                if (data[row][column] != '\n')
                {
                    printf("%c%d", data[row][column], count);
                    count = 1;
                }
            }
        }
    }
}

Answer 3

更改数据条目。它处理\n和错误检测。

printf("Enter your data (%dx%d) of characters: \n", SIZE1, SIZE2);
for (i = 0; i < SIZE1; i++) {
  char buffer[(SIZE2 + 2)*2];  // Consider IO buffers 2x the needed size
  if (fgets(buffer, sizeof buffer, stdin) == NULL) 
    Handle_EndOfFileOrIOError();

  size_t len = strlen(buffer);
  if (len != SIZE2+1 || buffer[len-1] != '\n') 
    Handle_UnexpectDataLengthError(buffer, len);

  for (j = 0; j < SIZE2; j++) {
    matrix2[i][j] = buffer[j];
  }
  // or simply memcpy(matrix2[i], buffer, SIZE2);

printf("\n");
compress(matrix2);
break;

压缩char数据

3 个答案: