Topic: hashing-problem / Level: advanced

• 2901. Write a function to find the total number of unique characters in a string using hashing.
• 2902. Given two strings, implement a function to check if they can be transformed into a valid palindrome using hashing.
• 2903. Create a program to find the longest substring that contains exactly k distinct characters using hashing.
• 2904. Write a function to count the occurrences of each character in a string using a hash map.
• 2905. Implement a function to find the maximum frequency of any character in a string using a hash map.
• 2906. Given a string, write a program to check if it can be transformed into a valid number using hashing.
• 2907. Create a program to find the longest substring that contains all distinct characters using hashing.
• 2908. Write a function to check if two strings can be rearranged to form a valid word using hashing.
• 2909. Given two strings, implement a function to find the longest common substring using a hash table.
• 2910. Create a program to count the occurrences of each letter in the English alphabet in a string using a hash map.
• 2911. Write a function to find the total number of unique characters in a string using hashing.
• 2912. Given two strings, implement a function to check if they can be rearranged to form a valid palindrome using hashing.
• 2913. Create a program to find the longest substring that contains exactly k distinct characters using hashing.
• 2914. Write a function to count the occurrences of each digit in a number using hashing.
• 2915. Implement a function to check if two strings can be transformed into another string using hashing.
• 2916. Given an array of integers, write a program to count the total number of odd numbers using a hash set.
• 2917. Create a program to find the longest substring that contains all distinct characters using hashing.
• 2918. Write a function to check if two strings can be transformed into a valid word using hashing.
• 2919. Given a string, implement a function to count the occurrences of each character using a hash map.
• 2920. Create a program to find the maximum frequency of any digit in a number using a hash map.
• 2921. Write a function to find the longest substring that contains the same character using hashing.
• 2922. Given two strings, implement a function to check if they can be rearranged to form a valid word using hashing.
• 2923. Create a program to check if a string can be rearranged to form a valid palindrome using hashing.
• 2924. Write a function to count the occurrences of each character in a string using a hash map.
• 2925. Implement a function to find the maximum product of any two numbers in an array using hashing.
• 2926. Create a program to find the longest substring that is a palindrome using hashing.
• 2927. Write a function to check if two arrays can be rearranged to form a valid word using hashing.
• 2928. Given a string, implement a function to check if it is a valid identifier using hashing.
• 2929. Create a program to find the frequency of each letter in the English alphabet in a string using a hash map.
• 2930. Write a function to count the occurrences of each digit in a number using hashing.
• 2931. Given two strings, implement a function to check if they can be rearranged to form a valid palindrome using hashing.
• 2932. Create a program to count the total number of unique characters in a string using a hash set.
• 2933. Write a function to find the longest substring that contains exactly k distinct characters using hashing.
• 2934. Implement a function to check if two strings can be transformed into a valid word using hashing.
• 2935. Given an array of integers, write a program to count the occurrences of each digit in a number using hashing.
• 2936. Create a program to find the maximum frequency of any character in a string using a hash map.
• 2937. Write a function to find the longest substring that is a palindrome using hashing.
• 2938. Given two strings, implement a function to check if they can be transformed into a valid word using hashing.
• 2939. Create a program to count the occurrences of each letter in the English alphabet in a string using a hash map.
• 2940. Write a function to check if a string can be transformed into a valid number using hashing.
• 2941. Given a string, implement a function to count the total number of unique characters in a string using hashing.
• 2942. Create a program to find the frequency of each character in a string using a hash map.
• 2943. Write a function to find the longest substring that contains all distinct characters using hashing.
• 2944. Implement a function to check if two strings can be rearranged to form a valid palindrome using hashing.
• 2945. Given two strings, implement a function to check if they can be transformed into a valid word using hashing.
• 2946. Create a program to count the occurrences of each digit in a number using hashing.
• 2947. Write a function to determine if two arrays can be rearranged to form a valid word using hashing.
• 2948. Given an array of integers, write a program to find the maximum frequency of any digit in a number using a hash map.
• 2949. Create a program to check if a string can be rearranged to form a valid palindrome using hashing.
• 2950. Write a function to find the longest substring that contains exactly k distinct characters using hashing.

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