Given a Roman numeral, Write a code to convert roman to integer value.
Roman numerals are represented by seven different letters (I, V, X, L, C, D, M). These seven letters are used to make thousands of numbers.
For example –
Example 1 –
Input : II , Output : 2
Example 2 –
Input : XI , Output : 11
Example 3 –
Input : IV , Output : 4
Example 4 –
Input : LVII , Output: 57
NOTE : The given input is guaranteed to be within the range from 1 to 3999.
Let’s discuss a interesting problem maximum sum subarray of size k
Given an array of positive integers and a positive number K. Write a code to find the maximum sum subarray of size k.
For example:
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Example 1: Input: {2, 1, 5, 1, 3, 2}, K = 3 Output: 9 { 5, 1, 3} |
Let’s first understand what all subarrays we can form whose size is 3.
i) First subarray is {2, 1, 5} and it’s sum is 8.
ii) Second subarray is {1, 5, 1} and it’s sum is 7.
iii) Third subarray is {5, 1,3} and it’s sum is 9.
iv) Fourth subarray is {1, 3, 2} and it’s sum is 6.
Out of all these subarrays of size three, the maximum sum subarray is {5, 1, 3} and it’s sum is 9.
Given an array of strings or a list of words, write a code to group anagrams together.
what are Anagrams?
Two strings are said to be anagrams of each other if it contains the same characters, only the order of character in both the strings is different.
Check whether two strings are anagrams of each other or not
For example, Word “car” and “rac” are anagrams of each other. As both, the strings contain the same number of characters only the order of character is different in both the strings.
Now, let’s understand this problem statement with example.
For example:
Input: {“eat”, “tea”, “tan”, “ate”, “nat”, “bat”}
Output:
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[ ["ate","eat","tea"], ["nat","tan"], ["bat"] ] |