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03_01_FindDuplicationInArray.cpp
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119 lines (105 loc) · 2.5 KB
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#include<iostream>
#include<vector>
using namespace std;
bool duplicationInArray(vector<int> nums, int &duplication)
{
if(nums.size() == 0)
return false;
for(int i = 0; i < nums.size(); i++)
{
if(nums[i] < 0 || nums[i] > nums.size())
return false;
while(nums[i] != i)
{
if(nums[i] == nums[nums[i]])
{
duplication = nums[i];
return true;
}
swap(nums[i], nums[nums[i]]);
}
}
return false;
}
// ====================测试代码====================
bool contains(vector<int> array, int number)
{
for(int i = 0; i < array.size(); ++i)
{
if(array[i] == number)
return true;
}
return false;
}
void test(char* testName, vector<int> numbers, vector<int> expected, bool validArgument)
{
printf("%s begins: ", testName);
int duplication;
bool validInput = duplicationInArray(numbers, duplication);
if(validArgument == validInput)
{
if(validArgument)
{
if(contains(expected, duplication))
printf("Passed.\n");
else
printf("FAILED.\n");
}
else
printf("Passed.\n");
}
else
printf("FAILED.\n");
}
// 重复的数字是数组中最小的数字
void test1()
{
vector<int> numbers = { 2, 1, 3, 1, 4 };
vector<int> duplications = { 1 };
test("Test1", numbers, duplications, true);
}
// 重复的数字是数组中最大的数字
void test2()
{
vector<int> numbers = { 2, 4, 3, 1, 4 };
vector<int> duplications = { 4 };
test("Test2", numbers, duplications, true);
}
// 数组中存在多个重复的数字
void test3()
{
vector<int> numbers = { 2, 4, 2, 1, 4 };
vector<int> duplications = { 2, 4 };
test("Test3", numbers, duplications, true);
}
// 没有重复的数字
void test4()
{
vector<int> numbers = { 2, 1, 3, 0, 4 };
vector<int> duplications = { -1 }; // not in use in the test function
test("Test4", numbers, duplications, false);
}
// 没有重复的数字
void test5()
{
vector<int> numbers = { 2, 1, 3, 5, 4 };
vector<int> duplications = { -1 }; // not in use in the test function
test("Test5", numbers, duplications, false);
}
// 无效的输入
void test6()
{
vector<int> numbers;
vector<int> duplications = { -1 }; // not in use in the test function
test("Test6", numbers, duplications, false);
}
int main()
{
test1();
test2();
test3();
test4();
test5();
test6();
return 0;
}