Merge pull request ashutosh97#86 from Akshayy99/new-branch

Added spiralMatrix problem for C++

Author: ashutosh97

SpiralMatrix/problem.txt

@@ -0,0 +1,21 @@
+Given a 2D array, print it in spiral form. See the following examples.
+
+Examples:
+
+Input:
+        1    2   3   4
+        5    6   7   8
+        9   10  11  12
+        13  14  15  16
+
+Output: 
+1 2 3 4 8 12 16 15 14 13 9 5 6 7 11 10 
+
+
+Input:
+        1   2   3   4  5   6
+        7   8   9  10  11  12
+        13  14  15 16  17  18
+
+Output: 
+1 2 3 4 5 6 12 18 17 16 15 14 13 7 8 9 10 11

SpiralMatrix/solution.cpp

@@ -0,0 +1,43 @@
+#include <bits/stdc++.h> 
+using namespace std; 
+#define R 3 
+#define C 6 
+  
+void spiralPrint(int m, int n, int a[R][C]) 
+{ 
+    int i, k = 0, l = 0; 
+  
+    while (k < m && l < n) 
+    { 
+        for (i = l; i < n; ++i) 
+            cout << a[k][i] << " "; 
+        k++; 
+  
+        for (i = k; i < m; ++i) 
+            cout << a[i][n - 1] << " "; 
+        n--; 
+  
+        if (k < m) 
+        { 
+            for (i = n - 1; i >= l; --i) 
+                cout << a[m - 1][i] << " "; 
+            m--; 
+        } 
+  
+        if (l < n) { 
+            for (i = m - 1; i >= k; --i) 
+                cout << a[i][l] << " "; 
+            l++; 
+        } 
+    } 
+} 
+  
+int main() 
+{ 
+    int a[R][C] = { { 1, 2, 3, 4, 5, 6 }, 
+                    { 7, 8, 9, 10, 11, 12 }, 
+                    { 13, 14, 15, 16, 17, 18 } }; 
+  
+    spiralPrint(R, C, a); 
+    return 0; 
+}