S1 Contains S2 In Python
Determine if the characters of string S2 appear in the same relative order within string S1
medium
45
Difficulty Levels
Choose your challenge. Start easy and work your way up.
215
Total Problems
Form String by Rotation
Determine if one string can be obtained by rotating another string
medium
45
Infinite Sequence Nth Digit
Find the Nth digit in the infinite sequence formed by concatenating positive integers starting from 1.
medium
44
Morse Code – Words
Decode a message from Morse code represented by consecutive 1's where each group corresponds to a letter of the alphabet
easy
46
First and Last X Digits
Extract and print the first X digits and last X digits from a given number N
easy
44
Function findMinimum – CTS PATTERN
Fix the logical error in the given code to correctly find the minimum value in an integer array
easy
45
Python Program To Check Triplet Sum
Count the number of unique triplets in an array that sum to a given target value S.
medium
45
Swap Integers – Equal Sum Matrices
Determine if swapping corresponding elements between two matrices can equalize their sums
medium
44
Relatives Meeting
Count the number of relatives in the same group as a given person based on relationship pairs
medium
44
Sum of even numbers from M to N
Calculate the sum of all even numbers within a given range from M to N (inclusive).
easy
44
Function matrixSum – CTS PATTERN
Fix syntax errors in the matrixSum function to correctly calculate the sum of all elements in a 2D matrix stored as a 1D array
easy
45
Team Formation
Find the maximum number of perfect teams that can be formed with at least one coder, one mathematician, and exactly three members
medium
45