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Given an array of a 999,999 numbers, from 1 to a 1,000,000, there's one number missing. The array is not sorted, and you can only access the array using a function getNumber(), which pops one number from the array. Each number in the array can only be accessed once. There's one number missing, from 1 to 1 million. which number is this?
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Software Development Engineer In Test (SDET)

Interviewed at Microsoft

4★
Feb 8, 2013

Given an array of a 999,999 numbers, from 1 to a 1,000,000, there's one number missing. The array is not sorted, and you can only access the array using a function getNumber(), which pops one number from the array. Each number in the array can only be accessed once. There's one number missing, from 1 to 1 million. which number is this?

1. Given a number N, find sum of all numbers from 1 to N-1 2. Your budget is X rupees, and there are N items available, each having its own cost (in an array). Find maximum items you can buy. 3. Given a string, find occurences of all substrings that are substring(0,x), where x=1,2,3...string.length
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Sdet

Interviewed at Coupa Software Inc

3.5★
Apr 20, 2021

1. Given a number N, find sum of all numbers from 1 to N-1 2. Your budget is X rupees, and there are N items available, each having its own cost (in an array). Find maximum items you can buy. 3. Given a string, find occurences of all substrings that are substring(0,x), where x=1,2,3...string.length

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