现在有2副扑克牌,从扑克牌中随机五张扑克牌,我们需要来判断一下是不是顺子。
有如下规则:
public class Solution {
public boolean IsContinuous(int [] numbers) {
if(numbers.length != 5) return false;
int min = 14;
int max = -1;
int flag = 0;
for(int i = 0; i < numbers.length; i++) {
int number = numbers[i];
if(number < 0 || number > 13) return false;
if(number == 0) continue;
if(((flag >> number) & 1) == 1) return false;
flag |= (1 << number);
if(number > max) max = number;
if(number < min) min = number;
if(max - min >= 5) return false;
}
return true;
}
}
#include
#include
int Compare(const void *arg1, const void arg2);
bool IsContinuous(int numbers, int length)
{
if(numbers == nullptr || length < 1)
return false;
qsort(numbers, length, sizeof(int), Compare);
int numberOfZero = 0;
int numberOfGap = 0;
// 统计数组中0的个数
for(int i = 0; i < length && numbers[i] == 0; ++i)
++numberOfZero;
// 统计数组中的间隔数目
int small = numberOfZero;
int big = small + 1;
while(big < length)
{
// 两个数相等,有对子,不可能是顺子
if(numbers[small] == numbers[big])
return false;
numberOfGap += numbers[big] - numbers[small] - 1;
small = big;
++big;
}
return (numberOfGap > numberOfZero) ? false : true;
}
int Compare(const void *arg1, const void *arg2)
{return (int) arg1 - (int) arg2;}