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970 student programmer interview questions shared by candidates

Mostly 3 programming questions: 1. populate an array with 1-n numbers, with no repeating instances. 2. given an array of n-1 numbers, populated by 1-n numbers, find the number that is missing. 3. given two linked lists that are connected, find the common link between the lists.
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Java Developer Student Position

Interviewed at Check Point Software Technologies

3.6★
Aug 21, 2019

Mostly 3 programming questions: 1. populate an array with 1-n numbers, with no repeating instances. 2. given an array of n-1 numbers, populated by 1-n numbers, find the number that is missing. 3. given two linked lists that are connected, find the common link between the lists.

Input: string in the format of XX:XX, where X could be either X or a digit (guaranteed). output: fill the X's so the string will contain the "latest" date on the year in the format of DD:MM, or null if the date is invalid. for example: 1. the input is "24:XX", the XX will be 12 because the latest date in the year that could fit here is December 24th. 2. the output for "X1:11" the date would be "21:11" beacuse November doesn't have only 30 days and not 31 so "31:11" is invalid 3. the output for "4X:XX" would be null because there is no month with more then 31 days in it. note: rembember that each month have a different amound of days
avatar

Student Software Developer

Interviewed at Check Point Software Technologies

3.6★
Jun 25, 2025

Input: string in the format of XX:XX, where X could be either X or a digit (guaranteed). output: fill the X's so the string will contain the "latest" date on the year in the format of DD:MM, or null if the date is invalid. for example: 1. the input is "24:XX", the XX will be 12 because the latest date in the year that could fit here is December 24th. 2. the output for "X1:11" the date would be "21:11" beacuse November doesn't have only 30 days and not 31 so "31:11" is invalid 3. the output for "4X:XX" would be null because there is no month with more then 31 days in it. note: rembember that each month have a different amound of days

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