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添加新方法

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Lines changed: 22 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -98,7 +98,8 @@ class Solution {`
`98`	`98`	```
`99`	`99`
`100`	`100`	`Python:`
`101`		-```python
	`101`	+```python
	`102`	`+# 方法 1: 数组在哈西法的应用`
`102`	`103`	`class Solution:`
`103`	`104`	`def uniqueOccurrences(self, arr: List[int]) -> bool:`
`104`	`105`	`count = [0] * 2002`
`@@ -113,6 +114,26 @@ class Solution:`
`113`	`114`	`return False`
`114`	`115`	`return True`
`115`	`116`	```
	`117`	+```python
	`118`	`+# 方法 2: map 在哈西法的应用`
	`119`	`+class Solution:`
	`120`	`+ def uniqueOccurrences(self, arr: List[int]) -> bool:`
	`121`	`+ ref = dict()`
	`122`	`+`
	`123`	`+ for i in range(len(arr)):`
	`124`	`+ ref[arr[i]] = ref.get(arr[i], 0) + 1`
	`125`	`+`
	`126`	`+ value_list = sorted(ref.values())`
	`127`	`+`
	`128`	`+ for i in range(len(value_list) - 1):`
	`129`	`+ if value_list[i + 1] == value_list[i]:`
	`130`	`+ return False`
	`131`	`+`
	`132`	`+ return True`
	`133`	`+`
	`134`	+```
	`135`	`+`
	`136`	`+`
`116`	`137`	`Go:`
`117`	`138`
`118`	`139`	`JavaScript:`

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