Create 1636. Sort Array by Increasing Frequency

Author: Chayandas07

1636. Sort Array by Increasing Frequency

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+class Solution {
+public:
+    vector<int> frequencySort(vector<int>& nums) {
+        unordered_map<int, int> map;
+        for (auto i : nums) {
+            map[i]++;
+        }
+        sort(nums.begin(), nums.end(), [&map](int a, int b) {
+            if (map[a] == map[b]) {
+                return a > b;
+            }
+            return map[a] < map[b];
+        });
+        return nums;
+    }
+};