Print a linked list in reverse recursively and non-destructively.
Java Interview Questions
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SQL question: given a table of interaction between users (user_a | user_b | day), find number of users who had more than 5 interactions yesterday (assume there is only one unique interaction between a pair of users per day). Product Question: A user satisfaction survey was conducted for two groups of facebook users (each with 50 k sample size). Group1: who had enabled certain login security features Group 2: who had not enabled these security features. It was found that user satisfaction with group1 was 30% lower than with group 2. Why do you think so? Comment on how the survey was conducted?
1--a 2--b ... 26--z given a digit , return the count of the possible output eg. '1313' --- 4 acac mac mm acm '101' --1 ja cannot discard any digit .
Design a data structure that supports insert, delete min, delete max, get min, and get max, all in log(n) time.
Write a C function to define strstr(char *haystack, char * needle) to return the first occurrence of needle in haystack. Code must compile and execute.
Given set of coins and each coin has its unique probability to be head up, say double[] probs stores the probability values for all coins, print out all different cases and accordingly probability.
Given a table with columns country (with two-letter country abbreviation), count of requests sent, percentage of requests sent failed, condense down to this data grouped by country: country (one row per country), total count of requests sent, total count of requests sent failed.
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