Topic: Hashing-question / Level: Intermediate

• 291. Write a program to find the first repeated word in a sentence using hashing.
• 292. Implement a function to check if a string can be segmented into words from a dictionary using hashing.
• 293. Create a hash table to store the mapping of employee names to their IDs.
• 294. Write a program to find the maximum length of a substring that contains only digits using hashing.
• 295. Implement a function to find the longest substring with at least k distinct characters using hashing.
• 296. Create a hash map to track the number of posts shared on social media platforms.
• 297. Write a program to find the total number of unique elements in two arrays using hashing.
• 298. Implement a function to check if two strings are anagrams of each other, ignoring spaces and punctuation, using hashing.
• 299. Create a hash table to store the mapping of city names to their populations.
• 300. Write a program to find the longest palindrome substring in a given string using hashing.
• 301. Implement a function to check if a string is a valid shuffle of three other strings using hashing.
• 302. Create a hash map to track the number of comments on different blog posts.
• 303. Write a program to find the maximum length of a contiguous subarray with an equal number of 0s and 1s using hashing.
• 304. Implement a function to find all pairs of elements in an array whose product equals a target value using hashing.
• 305. Create a hash table to store the mapping of event names to their dates.
• 306. Write a program to find the total number of unique characters in a string using hashing.
• 307. Implement a function to check if a string can be rearranged to form a palindrome using hashing.
• 308. Create a hash map to track the number of items sold for different brands.
• 309. Write a program to find the longest substring that contains at most one repeating character using hashing.
• 310. Implement a function to determine if a string is a valid expression using hashing.
• 311. Create a hash table to store the mapping of course names to their credit hours.
• 312. Write a program to find the maximum length of a substring that contains at least two vowels using hashing.
• 313. Implement a function to check if two strings are permutations of each other, considering spaces and punctuation, using hashing.
• 314. Create a hash map to track the number of unique visitors to a website.
• 315. Write a program to find the first unique word in a sentence using hashing.
• 316. Implement a function to find all possible palindromic substrings in a given string using hashing.
• 317. Create a hash table to store the mapping of animal names to their species.
• 318. Write a program to find the total number of unique items in a shopping cart using hashing.
• 319. Implement a function to check if a string is a valid palindrome, ignoring spaces and punctuation, using hashing.
• 320. Create a hash map to track the number of followers for different social media accounts.

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