flash-anni

so endless gaming is very popular these days especially on  mobile devices so how i can create a smooth game which would run at a constant framerate on a slower device is really a difficult task so lets try to break up the things into very small pieces. 1. infinite endless games are different from traditional side scrolling endless games they need many types of adjustment form example a side scrolling game required three major things one a camera a Player or actor and many objects (platforms,enemies,hurdles etc ) so basic concept of slide scrolling game is    

c++ code for Binary search Tree in a Generic Way  copy and paste the code in editor (c++) run #include <stdio.h> #include<iostream> #include<queue> using namespace std; template < typename T > class Node {   //can store any type of data private:   //genric data or store any type of data   T data;   //reference of left pointer   Node *left = nullptr;   //reference of right pointer   Node *right = nullptr; public:   Node ()   {   };   ~Node ()   {   };   //set data   Node (T _data)   {     data = _data;   }   //all setter and getter   void setLeftNode (Node * _left)   {     left = _left;   }   void setRightNode (Node * _right)   {     right = _right;   }   Node < T > *getLeftNode ()   {     return left;   }   Node < T > *getRightNode ()   {     return ...

 code :- just copy and paste ------------------------------------------- class Solution { public:          vector<vector<int>> merge(vector<vector<int>>& intervals) {         //sort the intervals first         if(intervals.size()<=1)         {             return intervals;         }         sort(intervals.begin(),intervals.end(),[](vector<int> &a,vector<int> &b){             return a[0]<b[0];         });                 //all overlapping intervals with non overlapping intervals would be here         vector<vector<int>> mergeintervals;                  vector<int> startInterval=intervals.at(0);    ...

 the graph can nearly solve any type of complex problem where we have a relationship between data sets. 1. social networks like Facebook friends relationships etc. 2. worldwide web where each page is connected to each other. few other problems can be solved using graphs check out the below link https://jeremykun.com/tag/games-on-graphs/ https://stackoverflow.com/questions/703999/what-are-good-examples-of-problems-that-graphs-can-solve-better-than-the-alterna some really nice videos on the graph -------------------------------------------------------------------------------------------------------------------------------- https://www.youtube.com/watch?v=gXgEDyodOJU   type of graph 1.  Graph Representation part 01 - Edge List      https://www.youtube.com/watch?v=ZdY1Fp9dKzs 2.  Graph Representation part 02 - Adjacency Matrix       https://www.youtube.com/watch?v=9C2cpQZVRBA 3.  Graph Representation part 03 - Adjacency List   ...

some little intro about  mutation in javascript  //befor starting object are mutable means you can change it //deep copy a object first way //1 const  objectA  =   {  a :   100 ,  b :   100   }; const  objectB  =   {   ... objectA  }; objectB . a  =   200 ; console . log ( objectB ); //2nd const  objectC  =   {   a :  objectA . a ,   b :  objectA . b }; objectC . a  =   1000 ; console . log ( objectC ); console . log ( objectA ); //another way to create deep copy nested object let  nobject  =   {   a :   10 ,   b :   20 ,   c :   {     name :   "manish" ,     age :   21    },   arr :   [ 1 ,   2 ,   3 , ...

 1. three.js is undoubtedly the best library to create interactive content for the web in 3d. link https://threejs.org/ a working sample of three with react can be found below https://stackblitz.com/edit/react-7n5qf9?file=src%2FApp.js why choose threejs 1. lightweight  2.fast 3.big community  https://discourse.threejs.org/ 4. even you can use unity or unreal to publish html5 content but i don't think that would be acceptable in many cases. 5. open-source project. i created a running sample with React  https://stackblitz.com/edit/react-7n5qf9?file=src%2FApp.js

the two-pointer technique is a very popular technique to solve some basic problem like just watch this nice video for more information https://www.youtube.com/watch?v=2wVjt3yhGwg&t=174s https://leetcode.com/articles/two-pointer-technique/ 1. Given a  vector  of integers and a target sum returns true if any two elements sum is equal to the target in the given vector bool checkSum(int sum, vector<int> &myVect) {     sort(myVect.begin(),myVect.end());     int i=0,j=myVect.size()-1;     while(j>=i)     {         if(myVect[i]+myVect[j]==sum)         {             return true;         }else if(myVect[i]+myVect[j]>sum)         {             j--;         }else if(myVect[j]+myVect[i]<sum)         {             i++; ...

 working sample 1. a generic binary search tree using a c++ template. 2.  using both BFS (queue or level order traversal  ) DFS (stack). working sample can be found at - >   https://www.onlinegdb.com/edit/HkuQLdA-w

  Reverse a sentence and print each word in reverse order in Javascript working sample https://www.onlinegdb.com/edit/S1qrNPHEw #include <iostream> #include<string> #include <ctype.h> using namespace std; string reverse(string &name) {     string newStr;     int len=name.length()-1;     int track=0;     int count = 0;      for(int i=len;i>=0;i--)     {         int c=name[i];         if (isspace(c))         {                         int start=i;             int end=(name.length())-track;             string temp;             for(int i=start;i<end;i++)             {                 temp+=name[i];       ...

working link https://stackblitz.com/edit/box-box-animation 

a small 2d sprite animation using angular using  requestAnimationFrame working sample   https://stackblitz.com/edit/animationangular?file=src%2Fapp%2Fanimated-sprite%2Fanimated-sprite.component.ts

//1 check a string is palindrome or not bool checkString(string &name,int start,int end) {     if(start>=end)     {         return true;     }     char a=name[start];     char b=name[end];     if(a==b)     {        return checkString(name,++start,--end);     }      return false;      } //2 get maximum element from a array int getMax(vector<int> &items,int index=0) {     if(index>=items.size())     {         return 0;     }     int current=items.at(index);     return max(current,getMax(items,++index)); } //3 Longest Common Subsequence int LCS(string &str1,string &str2,int a=0,int b=0) {     if(a>=str1.length() || b>=str2.length())     {         return 0;     }     if(str1[a]...

check the code below -------------------------------------------------------- https://stackblitz.com/edit/js-9vhtdm?file=index.js   //better ES5 object oriented in es5 //rules  //1. you can pass values in any order //2. default value //3. handle undefined in a better way  throw new Error function   Hero ( obj = undefined ) {      //if object is null return throw a new Error      if ( obj === undefined )      {        throw   new   Error ( "Empty Object" );      }      const   { name , age }= obj      this . name = name ;      this . age = age ; } //now extend myhero class function   Myhero ( obj = undefined )...

https://www.geeksforgeeks.org/window-sliding-technique/  working example https://www.onlinegdb.com/edit/BJX3JA0Zv code => #include <stdio.h> #include<iostream> #include<vector> using namespace std; //https://www.geeksforgeeks.org/window-sliding-technique/ int Windowslidingtechnique(vector<int> &vec,int element) {      //get sum      int sum=0;      for(int i=0;i<element;i++)      {          sum+=vec.at(i);      }      //sliding window technique      int windowSum=sum;      int maxSum=0;      for(int i=element;i<vec.size();i++)      {          windowSum+=vec.at(i)-vec.at(i-element);          maxSum=max(maxSum,windowSum);      }      return maxSum; } int main() {     vector<int> ve...