Ibm Coding & Algorithms Interview Questions
Practice the exact questions companies are asking right now.
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Reverse last two characters with space
Problem Given a non-empty string s with length at least 2, output a new string consisting of the last two characters of s in reverse order, separated ...
Compute minimum rooms for meeting schedule
Problem You are given a list of meetings, where each meeting is represented as a pair of integers [start, end] (with start < end) indicating the meeti...
Maximize palindromic strings after character swaps
You are given an integer n and an array of n lowercase strings arr. Operation (can be performed any number of times): choose two different strings arr...
Compute shared free time intervals
You are given schedules for multiple employees. schedules[i] is a list of busy intervals for employee i, where each interval is half-open [start, end)...
Find minimum subarray length with k distinct integers
Given an integer array arr and an integer k, find the minimum length of a contiguous subarray that contains exactly k distinct integer values. Return ...
Find minimum operations to make array sorted
Problem You are given an integer array a of length n. Define one operation as follows: 1. Remove the first element x = a[0]. 2. Append x to the end of...
Implement valid 1-D convolution
Implement a 'valid' 1‑D convolution function: given an input array of numbers, a kernel array of numbers, and a scalar bias, compute outputs only wher...
Implement valid 1D convolution with bias
Implement a 'valid' 1D convolution (no padding, stride = 1) over a numeric input array using a given kernel and scalar bias. Do not reverse the kernel...