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

1134

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

1164

---

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

1032

---

Convert Binary tree to linked list.

1145

---

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

1156

---

worst case complexities of Quick sort and Merge sort.

1090

---

What do you mean by hashing?

1168

---

What is the definition of tree ?

1126

---

When can you say a graph to be a tree?

1135

---

What do you mean by constant time complexity?

1339

---

Write a program to show whether a graph is a tree or not using adjacency matrix.

1152

---

You're given a Boolean 2D matrix, can you find the number of islands?

1150

---

What steps are taken when the OS shifts from one-thread execution to another?

1414

---

What are the differences between graph and tree?

1160

---

Differentiate between overriding and overloading cases?

1167

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