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Create 1207. Unique Number of Occurrences.cpp

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	`1`	`+class Solution {`
	`2`	`+public:`
	`3`	`+ bool uniqueOccurrences(vector<int>& arr) {`
	`4`	`+ unordered_map<int,int>mp;`
	`5`	`+ for(auto i:arr){`
	`6`	`+ mp[i]++;`
	`7`	`+ }`
	`8`	`+ unordered_set<int>s;`
	`9`	`+ bool flag = true;`
	`10`	`+ for(auto i:mp){`
	`11`	`+ if(s.find(i.second)!=s.end()){`
	`12`	`+ flag = false;`
	`13`	`+ break;`
	`14`	`+ }else{`
	`15`	`+ s.insert(i.second);`
	`16`	`+ }`
	`17`	`+ }`
	`18`	`+ return flag;`
	`19`	`+ }`
	`20`	`+};`

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