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连续和最大的子数组 代码(C)
题目: 在一个数组中, 找出连续和最大的子序列.使用两个变量, 一个变量存储当前值, 一个变量存储最大值, 并设一个临时数组, 用于更新最大和数组.时间复杂度O(n).代码:/*
* main.cpp
*
* Created on: 2014.9.19
* Author: spike
*/#include <iostream>
#include <vector>
#include <climits>using namespace std;int FindSequence (int data[], int length, vector<int>& vi){
if (data == NULL || length <= 0)
return INT_MIN;
int greatest = INT_MIN;
int cur = 0;
vector<int> tmp; for (int i=0; i<length; ++i) {
if (cur <= 0) {
cur = data[i];
tmp.clear();
tmp.push_back(data[i]);
} else {
cur += data[i];
tmp.push_back(data[i]);
} if (cur > greatest) {
vi = tmp;
greatest = cur;
}
}
return greatest;
}int main(void)
{
int data[] = {1, -2, 3, 10, -4, 7, 2, -5};
int length = sizeof(data)/sizeof(data[0]);
vector<int> vi;
int g = FindSequence(data, length, vi);
cout << g << ": ";
for (size_t i=0; i<vi.size(); ++i) {
cout << vi[i] << " ";
}
cout << endl; return 0;
}输出:18: 3 10 -4 7 2本文永久更新链接地址:http://www.linuxidc.com/Linux/2014-10/107628.htm