Create 1861. Rotating the Box (#641)

Author: Chayandas07

1861. Rotating the Box

@@ -0,0 +1,40 @@
+class Solution {
+public:
+    void swapChar(vector<char> &vec)
+    {
+        int n = vec.size(), Hash = 0;
+        unordered_map<int, int>store;
+        for(int i = 0; i < n; i++)
+        {
+            Hash += vec[i] == '#';
+            if(vec[i] == '*')
+                store[i] = Hash, Hash = 0;
+        }
+        if(Hash) store[n] = Hash;
+
+        for(auto [idx_i, count] : store)
+        {
+            int idx = idx_i;
+            while(count--) vec[--idx] = '#';
+            while(idx-- and vec[idx] != '*') vec[idx] = '.';
+        }
+    }
+
+    vector<vector<char>> rotateTheBox(vector<vector<char>>& box) 
+    {
+        int n = box.size(), m = box[0].size();
+        for(auto &Box:box) swapChar(Box);
+
+        vector<vector<char>>box90;
+        for(int i = m - 1; i >= 0; i--)
+        {
+            vector<char>temp;
+            for(int j = n - 1; j >= 0; j--)
+                temp.push_back(box[j][i]);
+            box90.push_back(temp);
+        }
+
+        reverse(begin(box90), end(box90));
+        return box90;
+    }
+};