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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. using namespace std;
  5.  
  6. const char _ssp_stx = 0x7f;
  7.  
  8. void stx_shrink(vector<char> &a)
  9. {
  10.   if (a.size() < 2) return;
  11.  
  12.   unsigned i = -1U, q = -1U, n = a.size() - 1;
  13.  
  14.   while (++q < n)
  15.     if ((a[++i] = a[q]) == _ssp_stx && a[q+1] == _ssp_stx)
  16.       ++q;
  17.  
  18.   if (q == n)
  19.     a[++i] = a[q];
  20.  
  21.   a.resize(i+1);
  22. }
  23.  
  24. int main()
  25. {
  26.   vector<char> a = { 0x7f, 0x10, 0x7f, 0x7f, 0x10, 0x7f, 0x7f, 0x7f, 0x7f, 0x11, 0x7f, 0x7f };
  27.   vector<char> b = { 0x7f, 0x10, 0x10, 0x10, 0x10, 0x7f };
  28.   vector<char> c = { 0x7f, 0x10, 0x10, 0x10, 0x7f, 0x7f };
  29.   vector<char> d = { 0x7f, 0x7f, 0x10, 0x10, 0x10, 0x7f };
  30.   vector<char> e = { 0x7f, 0x7f, 0x10, 0x10, 0x7f, 0x7f };
  31.   vector<char> f = { 0x7f, 0x7f };
  32.   vector<char> g = { 0x7f, 0x7f, 0x7f };
  33.   vector<char> h = { 0x7f, 0x7f, 0x7f, 0x7f };
  34.   vector<char> i = { 0x7f, 0x7f, 0x7f, 0x7f, 0x7f };
  35.   vector<char> j = { 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, 0x7f };
  36.  
  37.   stx_shrink(a);   for (char x : a) cout << hex << (unsigned)x << ' ';   cout << endl;
  38.   stx_shrink(b);   for (char x : b) cout << hex << (unsigned)x << ' ';   cout << endl;
  39.   stx_shrink(c);   for (char x : c) cout << hex << (unsigned)x << ' ';   cout << endl;
  40.   stx_shrink(d);   for (char x : d) cout << hex << (unsigned)x << ' ';   cout << endl;
  41.   stx_shrink(e);   for (char x : e) cout << hex << (unsigned)x << ' ';   cout << endl;
  42.   stx_shrink(f);   for (char x : f) cout << hex << (unsigned)x << ' ';   cout << endl;
  43.   stx_shrink(g);   for (char x : g) cout << hex << (unsigned)x << ' ';   cout << endl;
  44.   stx_shrink(h);   for (char x : h) cout << hex << (unsigned)x << ' ';   cout << endl;
  45.   stx_shrink(i);   for (char x : i) cout << hex << (unsigned)x << ' ';   cout << endl;
  46.   stx_shrink(j);   for (char x : j) cout << hex << (unsigned)x << ' ';   cout << endl;
  47.  
  48.   return 0;
  49. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin
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Standard input is empty
stdout
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7f 10 7f 10 7f 7f 11 7f 
7f 10 10 10 10 7f 
7f 10 10 10 7f 
7f 10 10 10 7f 
7f 10 10 7f 
7f 
7f 7f 
7f 7f 
7f 7f 7f 
7f 7f 7f
https://ideone.com/Zv6Vjy
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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