abcd 的全排列代码
时间: 2023-10-25 12:10:15 浏览: 82
以下是使用递归方式实现的abcd的全排列代码:
```python
def permute(data, i, length):
if i == length:
print(''.join(data))
else:
for j in range(i, length):
# swap
data[i], data[j] = data[j], data[i]
# recursive call
permute(data, i+1, length)
# swap back
data[i], data[j] = data[j], data[i]
# test the function
data = list('abcd')
permute(data, 0, len(data))
```
输出结果为:
```
abcd
abdc
acbd
acdb
adcb
adbc
bacd
badc
bcad
bcda
bdca
bdac
cbad
cbda
cabd
cadb
cdab
cdba
dbca
dbac
dcba
dcab
dacb
dabc
```
相关问题
matlab全排列函数
在Matlab中,可以使用perms函数来进行全排列操作。例如,如果要对字符'ABCD'进行全排列,可以使用以下代码:perms(['A', 'B', 'C', 'D'])。这将返回一个矩阵,其中每一行表示一个全排列的结果。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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[ .reference_list ]
java中有全排列函数吗
Java中没有内置的全排列函数,需要自己实现。可以使用递归算法来实现全排列。具体实现可以参考以下代码:
```java
public class Permutation {
public static void main(String[] args) {
String str = "abcd";
permutation(str.toCharArray(), 0, str.length() - 1);
}
public static void permutation(char[] ch, int start, int end) {
if (start == end) {
System.out.println(new String(ch));
} else {
for (int i = start; i <= end; i++) {
swap(ch, i, start);
permutation(ch, start + 1, end);
swap(ch, i, start);
}
}
}
public static void swap(char[] ch, int i, int j) {
char temp = ch[i];
ch[i] = ch[j];
ch[j] = temp;
}
}
```
这段代码实现了一个字符串的全排列,输出结果如下:
```
abcd
abdc
acbd
acdb
adcb
adbc
bacd
badc
bcad
bcda
bdca
bdac
cbad
cbda
cabd
cadb
cdab
cdba
dbca
dbac
dcba
dcab
dacb
dabc
```
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