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@heatblazer
Created December 8, 2018 13:42
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RLE algorithm
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static int codes[0xFF]= {0};
static void addcode(unsigned char c)
{
codes[(int)c]++;
}
char* RLE(const char* str)
{
if (!str)
return 0;
char* data = (char*) malloc(sizeof(char) * 2+1);
if (!data)
return 0;
int i = 0, j = 0;
int len = strlen(str);
int rLen = 0;
for(i=0; i < len; i++)
{
data[j++] = str[i];
for(const char* it = &str[i]; *it == str[i]; it++)
{
rLen++;
}
i += rLen-1;
char buff[5] = {0}; // print buffer
sprintf(buff, "%d", rLen);
strcat(&data[j], buff);
j += strlen(buff);
rLen = 0;
}
return data;
}
int main()
{
char* d = RLE("aaaaaaaaaaaaaaaaaaasssssssssssssssssssssbbbbbbbbbbbbbbbbbbbbsssssssssssssssssssssasasas");
printf("%s\r\n", d);
free(d);
return 0;
}
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