Add C++ implementation

Signed-off-by: begeekmyfriend <begeekmyfriend@gmail.com>

Author: begeekmyfriend

0438_find_all_anagrams_in_a_string/anagrams_in_string.cc

@@ -0,0 +1,32 @@
+#include <stdc++.h>
+
+using namespace std;
+
+class Solution {
+public:
+    vector<int> findAnagrams(string s, string p) {
+        int count[128] = { 0 };
+        for (char c : p) {
+            count[c]++;
+        }
+
+        vector<int> res;
+        int l = 0, r = 0, len = 0;
+        while (r < s.length()) {
+            if (--count[s[r++]] >= 0) {
+                len++;
+            }
+
+            if (r - l >= p.length()) {
+                if (len == p.length()) {
+                    res.push_back(l);
+                }
+                if (++count[s[l++]] > 0) {
+                    len--;
+                }
+            }
+        }
+
+        return res;
+    }
+};

0567_permutation_in_string/permutation_in_string.cc

@@ -0,0 +1,31 @@
+#include <stdc++.h>
+
+using namespace std;
+
+class Solution {
+public:
+    bool checkInclusion(string s1, string s2) {
+        int count[128] = { 0 };
+        for (char c : s1) {
+            count[c]++;
+        }
+
+        int l = 0, r = 0, len = 0;
+        while (r < s2.length()) {
+            if (--count[s2[r++]] >= 0) {
+                len++;
+            }
+
+            if (r - l >= s1.length()) {
+                if (len == s1.length()) {
+                    return true;
+                }
+                if (++count[s2[l++]] > 0) {
+                    len--;
+                }
+            }
+        }
+
+        return false;
+    }
+};