chore(CPlusPlus): add reverse the string wordwise (#1100)

algorithms/CPlusPlus/README.md

@@ -136,6 +136,7 @@
 - [Longest common prefix](Strings/longest-common-prefix.cpp)
 - [First unique character in the string](Strings/first-unique-character.cpp)
 - [Sliding Window to match target string](Strings/sliding-window.cpp)
+- [Reverse String Wordwise](Strings/ReverseTheStringWordwise.cpp)
 
 ## Trees
 

algorithms/CPlusPlus/Strings/ReverseTheStringWordwise.cpp

@@ -0,0 +1,48 @@
+// Description :- Given a string, the task is to reverse the order of the words in the given string. 
+// Example :-
+// Input 1:
+//    A = "the sky is blue"
+// Input 2:
+//    A = "this is ib"
+// Output 1:
+//    "blue is sky the"
+// Output 2:
+//    "ib is this"
+
+
+// Time Complexity = O(N), Space Complexity = O(N)
+
+#include<bits/stdc++.h>
+using namespace std;
+
+string solve(string s) {
+   vector<string>v;
+        string str="";
+        for(int i=0;i<s.length();i++){
+            if(s[i]!=' '){
+                str+=s[i];
+            }
+            else if(str!="" && s[i]==' '){
+                v.push_back(str);
+                str="";
+            }
+        }
+        if(str!=""){
+            v.push_back(str);
+        }
+        str="";
+        for(int i=v.size()-1;i>0;i--){
+                str+=v[i];
+                str+=' ';
+        }
+        str+=v[0];
+        return str;
+}
+
+int main()
+{
+    string s;
+    getline(cin, s);
+    cout<<solve(s);
+    return 0;
+}