SDE - 1

You are given a 2-D array 'MATRIX' of dimensions N x M, of integers. You need to return the spiral path of the matrix.

Example Of Spiral Path:

You have been given a binary matrix 'MAT' containing only 0’s and 1’s of size N x M. You need to find the distance of the nearest cell having 1 in the matrix for each cell.

The distance is calculated as |i1 – i2| + |j1 – j2|, where i1, j1 are the coordinates of the current cell and i2, j2 are the coordinates of the nearest cell having value 1.

Note :

You can only move in four directions which are : Up, Down, Left and Right.

For example :

If N = 3, M = 4

and mat[ ][ ] = { 0, 0, 0, 1,
                  0, 0, 1, 1,
                  0, 1, 1, 0 }

then the output matrix will be

3  2  1  0
2  1  0  0
1  0  0  1

You are given an array ‘A’ of length ‘N’, you have to tell the number of arithmetic subarrays that exist in the array ‘A’.

An Arithmetic subarray is a subarray that has 3 or more elements and the difference between consecutive elements is the same. Eg: [1, 3, 5, 7] has a length of 4, and diff between any two consecutive elements is 2.

Note:

A subarray is a slice from a contiguous array (i.e., occupy consecutive positions) and inherently maintains the order of elements.

You are given two sorted linked lists. You have to merge them to produce a combined sorted linked list. You need to return the head of the final linked list.

Note:

The given linked lists may or may not be null.

For example:

If the first list is: 1 -> 4 -> 5 -> NULL and the second list is: 2 -> 3 -> 5 -> NULL

The final list would be: 1 -> 2 -> 3 -> 4 -> 5 -> 5 -> NULL

You are given a string 'S'. Your task is to partition 'S' such that every substring of the partition is a palindrome. You need to return all possible palindrome partitioning of 'S'.

Note: A substring is a contiguous segment of a string.

For Example:

For a given string “BaaB”
3 possible palindrome partitioning of the given string are:
{“B”, “a”, “a”, “B”}
{“B”, “aa”, “B”}
{“BaaB”}
Every substring of all the above partitions of “BaaB” is a palindrome.

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