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Write a C program to print look and say sequence?
For example if u get the input as 1 then the sequence is
11 21 1211 111221 312211 12112221 .......(it counts the no. of 1s,2s etc which is in successive order) and this sequence is used in run-length encoding.
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Answer Posted / chuck dorris
#include <string>
#include <sstream>
std::string lookandsay(const std::string &s)
{
std::ostringstream r;
for (unsigned int i = 0; i != s.length(); ) {
unsigned int new_i = s.find_first_not_of(s[i], i+1);
if (new_i == std::string::npos)
new_i = s.length();
r << new_i - i << s[i];
i = new_i;
}
return r.str();
}
#include <iostream>
int main()
{
std::string laf = "1";
std::cout << laf << std::endl;
for (int i = 0; i < 10; i++) {
laf = lookandsay(laf);
std::cout << laf << std::endl;
}
return 0;
}
| Is This Answer Correct ? | 0 Yes | 8 No |
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