C++二维数组中的查找算法示例

#include <iostream>
#include <vector>
using namespace std;
bool Find(int target, vector<vector<int> > array) {
  int row = array.size();   //行数  
  int column = array[0].size();  //列数
  int i = 0, j = column - 1;
  while (i < row && j >= 0)
  {
    if (array[i][j] == target) //从右上角第一个找起，大于target向左查找，小于target则向下查找
    {
      return true;
    }
    else if (array[i][j] > target)
    {
      j--;    //向左查找
    }
    else
    {
      i++;    //向下查找
    }
  }
  return false;
}
int main()
{
  vector<int> vec1{ 3, 7, 9, 12, 19, 23 };
  vector<int> vec2{ 4, 17, 19, 31, 32, 33 };
  vector<vector<int> > array;
  array.push_back(vec1);
  array.push_back(vec2);
  bool result = Find(32, array);
  cout << "result = " << result << endl;
  system("pause");
}