Given a string, return the first NON-repeating character that occurs in the string. EX: "adzbdcab" returns 'z'.
Engineer Software Interview Questions
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How would you multiply two strings: "123 * "45", without any casting.
Convert a binary search tree to a sorted, circular, doubly-linked list, in place (using the tree nodes as the new list nodes).
given a string with parenthesis, eliminate the illegal parenthesis and return a legal string. for example: "(()" -> "()" ")))(" -> "" "()(()" -> "()()"
Given two sorted input arrays which contain a two element array of [key, value], write a function which multiplies the two arrays together and sums them where the "key" matches. Example: "v1 = [[1, 3], [2, 4], [99, 3]]; v2 = [[2,3],[5,9],[99,1]]" results in "15". I first brute forced it with O(n*m) then used two pointers which resulted in O(n+m) then he asked me to write it in O(n log m). I could not think of an algorithm at the time for O(n log m).
How do you reverse the words in a string? Code.
Given a list of integers, some of which may be negative, extract the pair that sums to the largest number.
Swap two digits from an integer, the result should be the maximum. For example 3580 -> 8350
Given the following struct how much memory is require to store it in a 32-bit and 64-bit system? struct A { char t; char *t; }
A led bring 3times a minutes and another one 5 times for a span of 2 times. If both starts at a same time. How many times will they blink together at the end of the hour!?
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