What is HttpURL connection ?

1101

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Lowest Common ancestor in a Binary Search Tree and Binary Tree.

989

---

Program to Find the second largest element in an array.

1265

---

Print Vertical traversal of a Binary Tree.

1067

---

Make a data structure and implement an algorithm to print all the files in a directory. (The root directory can have sub-directories too.)

1381

---

Is {a, n, d} a palindrome? If you are given a random string, is it a palindrome or not?

1200

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Add a value x to array from index l to r where 0 <= l <= r <= n-1

1140

---

Implement a stack with push (), pop() and min() in O(1) time.

1165

---

Find the value of a specified element of the array arr[i] where 0 <= i <= n-1

1038

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Convert Binary tree to linked list.

1148

---

Convert a BST into a DLL and DLL to BST in place.

1159

---

worst case complexities of Quick sort and Merge sort.

1091

---

What do you mean by hashing?

1170

---

What is the definition of tree ?

1132

---

When can you say a graph to be a tree?

1139

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