Coding
Reverse a String or Array
Time Complexity : O(n) Do not allocate extra space for another array, you must do this by modifyin…
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Coding
Given an array which consists of only 0, 1 and 2. Sort the array without using any sorting algorithm
Expected Time Complexity: O(N) Expected Auxiliary Space: O(1) Constraints: 1 <= N <= 10^5 0…
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Coding
Maximum and minimum of an array using minimum number of comparisons.
Given three distinct numbers A, B and C. Find the number with value in middle (Try to do it with …
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Coding
square root of an integer.
Consider a sample space S consisting of all perfect squares starting from 1, 4, 9 and so on. You…
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Coding
Search in a rotated sorted array.
You are given an integer array nums sorted in ascending order, and an integer target . Suppos…
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Coding
Find a Fixed Point (Value equal to index) in a given array.
Given an array Arr of N positive integers. Your task is to find the element whose value is eq…
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Coding
Find first and last positions of an element in a sorted array.
Given a sorted array with possibly duplicate elements, the task is to find indexes of first and las…
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