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Tree : Top View Hackerrank Solution - java

Tree : Top View Hackerrank Solution for explanation watch Video :  Code:  import  java.util.*; import  java.io.*; class  Node {     Node left;     Node right;      int  data;          Node( int  data) {          this .data = data;         left = null;         right = null;     } } class  Solution {      /*           class Node          int data;         Node left;         Node right;     */      static   cla...
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Tree: Level Order Traversal Hackerrank Solution - java | Hackerrank Data Structures

 Tree: Level Order Traversal Hackerrank Solution - java For Explanation Watch Video :  Code import  java.util.*; import  java.io.*; class  Node {     Node left;     Node right;      int  data;          Node( int  data) {          this .data = data;         left = null;         right = null;     } } class  Solution {      /*           class Node          int data;         Node left;         Node right;     */     ...
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