Sirisha Challagiri

Sirisha Challagiri

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@Siri_2316 @sirisha469

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Recent articles

Transform to Prime

Dec 8, 2023 Given an array of n integers. Find the minimum positive number to be inserted in array, so that sum of all elements of array becomes prime. Example 1: Input: N=5 arr = {2, 4, 6, 8, 12} Output: 5 Explanation: The sum of the array is 32 ,we can add ...

Amazon - How Many X’s In a Range

Dec 7, 2023 Given two integers L, R, and digit X. Find the number of occurrences of X in all the numbers in the range (L, R) excluding L and R. Example 1: Input: L=10, R=19, X=1 Output: 9 Explanation: There are 9 1s (11, 12, 13, 14, 15, 16, 17, 18) in the number...

657. Robot Return to Origin

Dec 4, 2023 There is a robot starting at the position (0, 0), the origin, on a 2D plane. Given a sequence of its moves, judge if this robot ends up at (0, 0) after it completes its moves. You are given a string moves that represents the move sequence of the robo...

1160. Find Words That Can Be Formed by Characters

Dec 2, 2023 You are given an array of strings words and a string chars. A string is good if it can be formed by characters from chars (each character can only be used once). Return the sum of lengths of all good strings in words. Example 1: Input: words = ["cat"...

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