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基数排序增加python实现 (#31)

* 增加python实现 * 基数排序格式调整

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10.radixSort.md

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Original file line number	Diff line number	Diff line change
`@@ -7,7 +7,7 @@`
`7`	`7`
`8`	`8`	`基数排序有两种方法:`
`9`	`9`
`10`		`-这三种排序算法都利用了桶的概念,但对桶的使用方法上有明显差异:`
	`10`	`+这三种排序算法都利用了桶的概念,但对桶的使用方法上有明显差异案例看大家发的:`
`11`	`11`
`12`	`12`	`- 基数排序:根据键值的每位数字来分配桶;`
`13`	`13`	`- 计数排序:每个桶只存储单一键值;`
`@@ -49,7 +49,39 @@ function radixSort(arr, maxDigit) {`
`49`	`49`	`}`
`50`	`50`	```
`51`	`51`
`52`		`-## 4. Java 代码实现`
	`52`	`+`
	`53`	`+## 4. python 代码实现`
	`54`	`+`
	`55`	+```python
	`56`	`+def radix(arr):`
	`57`	`+`
	`58`	`+ digit = 0`
	`59`	`+ max_digit = 1`
	`60`	`+ max_value = max(arr)`
	`61`	`+ #找出列表中最大的位数`
	`62`	`+ while 10**max_digit < max_value:`
	`63`	`+ max_digit = max_digit + 1`
	`64`	`+`
	`65`	`+ while digit < max_digit:`
	`66`	`+ temp = [[] for i in range(10)]`
	`67`	`+ for i in arr:`
	`68`	`+ #求出每一个元素的个、十、百位的值`
	`69`	`+ t = int((i/10**digit)%10)`
	`70`	`+ temp[t].append(i)`
	`71`	`+`
	`72`	`+ coll = []`
	`73`	`+ for bucket in temp:`
	`74`	`+ for i in bucket:`
	`75`	`+ coll.append(i)`
	`76`	`+`
	`77`	`+ arr = coll`
	`78`	`+ digit = digit + 1`
	`79`	`+`
	`80`	`+ return arr`
	`81`	+```
	`82`	`+`
	`83`	`+`
	`84`	`+## 5. Java 代码实现`
`53`	`85`
`54`	`86`	```java
`55`	`87`	`/**`
`@@ -134,7 +166,7 @@ public class RadixSort implements IArraySort {`
`134`	`166`	`}`
`135`	`167`	```
`136`	`168`
`137`		`-## 5. PHP 代码实现`
	`169`	`+## 6. PHP 代码实现`
`138`	`170`
`139`	`171`	```php
`140`	`172`	`function radixSort($arr, $maxDigit = null)`
`@@ -169,4 +201,4 @@ function radixSort($arr, $maxDigit = null)`
`169`	`201`
`170`	`202`	`return $arr;`
`171`	`203`	`}`
`172`		-```
	`204`	+```

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