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Intern Interview Questions
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if A! + B! + C! = ABC and A, B, C are single digit numbers, find A, B, and C.
counting sort, binary tree preorder traversal, binary tree inorder traversal, keys and boxes (leetcode 1298)
Write a function to remove all redundant characters in a given string.
Remove duplicates from a linked list. O(n) time.
How will you make this code readable (given a piece of code)
Not hard at all.
write a function to print the frequency of characters eg. Input : aabbbc Output: a2b3c1
Technical Given an unsorted array of numbers (that may contain repeated numbers), print or produce a data structure that contains all the pairs that have a sum equal to a number k. Do not include pairs that are the same numbers in a different order. Ex. [3,2,6,2,0,5,3,8,7,10] [(0,10),(2,8),(3,7)]
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