Using the generic sort algorithm with a binary predicate: greater : sort « STL Algorithms Sorting « C++





Using the generic sort algorithm with a binary predicate: greater

  
 

#include <iostream>
#include <algorithm>
#include <cassert>
#include <functional>
using namespace std;

int main() {

  int a[100];
  int i;
  for (i = 0; i < 100; ++i)
    a[i] = i;

  random_shuffle(&a[0], &a[100]);

  for (i = 0; i < 100; ++i)
    cout <<  a[i] << " ";
  cout <<"\n\n\n\n";
  // Sort into descending order:
  sort(&a[0], &a[100], greater<int>());


  for (i = 0; i < 100; ++i)
    cout <<  a[i] << " ";


  return 0;
}

/* 
12 1 9 98 96 27 58 82 86 90 18 62 32 40 71 51 91 41 94 17 8 47 64 66 65 7 6 76 5
 99 77 81 54 35 56 39 25 3 87 16 61 68 14 13 24 55 97 19 20 59 75 33 21 28 78 15
 50 34 36 44 83 38 46 60 84 95 57 22 37 23 70 89 31 79 73 92 11 2 88 42 30 52 72
 53 67 29 85 43 74 69 45 26 93 10 48 80 0 63 49 4



99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73
 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 4
6 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20
19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 "
 */        
    
  










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