Given an array of size N in which every number is between 1 and N, determine if there are any duplicates in it. You are allowed to destroy the array if you like.21 41887
Write a routine to draw a circle (x ** 2 + y ** 2 = r ** 2) without making use of any floating point computations at all.2 20534
Give a one-line C expression to test whether a number is a power of 2.10 20902
Give a very good method to count the number of ones in a 32 bit number. (caution: looping through testing each bit is not a solution)7 26874
program to Reverse a linked list12 54659
write a program to Insert in a sorted list4 12638
Write a routine that prints out a 2-D array in spiral order3 15779
Write, efficient code for extracting unique elements from a sorted list of array. e.g. (1, 1, 3, 3, 3, 5, 5, 5, 9, 9, 9, 9) -> (1, 3, 5, 9).12 31693
How to swap two variables, without using third variable ?104 209137
how to check whether a linked list is circular.11 57501
Write out a function that prints out all the permutations of a string. For example, abc would give you abc, acb, bac, bca, cab, cba. You can assume that all the characters will be unique.5 20186
Write a prog to accept a given string in any order and flash error if any of the character is different. For example : If abc is the input then abc, bca, cba, cab bac are acceptable, but aac or bcd are unacceptable.5 12421
Find your day from your DOB?15 15278
Given an array of characters which form a sentence of words, give an efficient algorithm to reverse the order of the words (not characters) in it.9 18606
String copy logic in one line.11 23082
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