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Count Substrings with Frequencies Less than Maximum Digit

Last Updated: 31 December 2023

Given a string S of length N. Then your task is to find the count of substrings such that, the frequency of each digit in that substring must be less than the maximum digi...read more

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Maximize the number formed by replacing adjacent digits with their sum

Last Updated: 07 November 2022

Given a number N without leading 0s, the task is to find the maximum number formed after replacing any two adjacent digits by their sum only once.Examples:Input: 10057Outp...read more

Find the maximum number formed by swapping digits of same parity

Last Updated: 01 July 2022

Given a number N, the task is to maximize this number by following the given conditions:The odd digit of the number can only be swapped by any odd digit present in the giv...read more

Largest integer divisible by 9 after inserting any digit in N

Last Updated: 16 June 2022

Given a large integer N, the task is to find the largest possible integer which is divisible by 9 after inserting exactly one digit from 0 to 9 anywhere in the N.Note: Lea...read more

Count of Integers in given range consisting only given set of Digits

Last Updated: 23 July 2025

Given two integers L and R, and an array arr[] containing single digit integers, the task is to find all the integers in the range [L, R) consisting of digits from given a...read more

DSA

number-digits

Count of subarrays with digit sum equals to X

Last Updated: 23 July 2025

Given an array arr[] of length N and integer X, the task is to count no of subarrays having digit sum equal to X.Examples:Input: arr[] = {10, 5, 13, 20, 9}, X = 6Output: 2...read more

Mathematical

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Encode Strings in form of "xAyB" where x and y and based on count of digits

Last Updated: 13 July 2023

Given two numeric string N and M, the task is to encode the given strings in the form "xAyB", where:x is the count of digits that are same in N and M and are present on sa...read more

Count of digits in N and M that are same but present on different indices

Last Updated: 09 February 2022

Given two numbers N and M, the task is to find the count of digits in N and M that are the same but present on different indices.Examples:Input: N = 123, M = 321Output: 2E...read more

Mathematical

DSA

number-digits

Count of digits in N and M that are same and are present on the same indices

Last Updated: 12 December 2022

Given two number N and M, the task is to find the count of digits in N and M that are the same and are present on the same indices.Examples:Input: N = 123, M = 321Output: ...read more

Mathematical

DSA

number-digits

Find two numbers A and B of X and Y digits respectively with GCD having Z digits

Last Updated: 23 July 2025

Given three positive integers X, Y, and Z. The task is to find two numbers A and B of X and Y digits respectively with their GCD having Z digits. where Z ≤ min(X, Y). If t...read more

Find all N digit integers with sequential digits

Last Updated: 22 February 2022

Given an integer N, the task is to find all N digit integers with sequential digitsExamples:Input: N = 4Output: {1234, 2345, 3456, 4567, 5678, 6789}Explanation: All 4 digi...read more

Maximum count of digits that can be removed such that remaining integer is consonant

Last Updated: 23 July 2025

Given a string S representing an N digit integer, the task is to find the maximum number of digits that can be removed such that the remaining digits from a consonant inte...read more

Minimize the number formed by replacing adjacent pair of digits with their sum

Last Updated: 23 July 2025

Given string s denoting a number. The task is to find the minimum number that can be formed after replacing two consecutive digits of s by their sum.Examples:Input: s = "1...read more

Reverse digits of an integer with overflow handled | Set 2

Last Updated: 23 July 2025

Given a 32-bit integer N. The task is to reverse N, if the reversed integer overflows, print -1 as the output.ExamplesInput: N = 123Output: 321Input: N = -123Output: -321I...read more

Find all numbers in range whose digits are increasing decreasing alternatively

Last Updated: 01 February 2022

Given integers L and R, find all numbers in range L to R whose digits are increasing-decreasing alternatively i.e. if the digits in the current number are d1, d2, d3, d4, ...read more

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URL: https://www.geeksforgeeks.org/tag/number-digits/

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