Topic: language-problem / Level: intermediate

• 1252. Write a program to find the longest decreasing subsequence in an array.
• 1253. Write a program to check if two strings are equal ignoring punctuation.
• 1254. Write a program to calculate the sum of the first n odd numbers.
• 1255. Write a program to implement a basic contact management system using structures.
• 1256. Write a program to check if a number is an odd prime number.
• 1257. Write a program to find the smallest prime factor of a number using trial division.
• 1258. Write a program to check if a string is a valid time in 12-hour format.
• 1259. Write a program to calculate the area of a triangle using Herons formula.
• 1260. Write a program to implement a simple online quiz application with feedback.
• 1261. Write a program to check if two strings can be rearranged to form the same string.
• 1262. Write a program to find the maximum frequency of any character in a string.
• 1263. Write a program to convert seconds to hours, minutes, and seconds.
• 1264. Write a program to implement a basic game of Rock, Paper, Scissors.
• 1265. Write a program to check if a number is a sociable number.
• 1266. Write a program to find the total number of even and odd numbers in an array.
• 1267. Write a program to implement a simple online marketplace application.
• 1268. Write a program to check if a string contains any digits.
• 1269. Write a program to find the sum of all the prime numbers in a list.
• 1270. Write a program to implement a basic memory allocation simulator.
• 1271. Write a program to check if a number is an automorphic number.
• 1272. Write a program to find the sum of squares of the first n even numbers.
• 1273. Write a program to implement a basic online ticket reservation system.
• 1274. Write a program to check if a string is a valid hexadecimal color code.
• 1275. Write a program to find the longest consecutive sequence of characters in a string.
• 1276. Write a program to implement a simple recipe application with ingredients.
• 1277. Write a program to check if a number is a happy number using recursion.
• 1278. Write a program to find the total number of digits in a floating-point number.
• 1279. Write a program to implement a basic personal finance application.
• 1280. Write a program to check if a string is a valid URL using regex.
• 1281. Write a program to calculate the average of grades using a weighted average.
• 1282. Write a program to find the maximum and minimum values in an array using recursion.
• 1283. Write a program to implement a simple project management tool.
• 1284. Write a program to check if two strings can be made anagrams with a limited number of swaps.
• 1285. Write a program to find the sum of the digits at odd positions in a number.
• 1286. Write a program to implement a basic online survey application.
• 1287. Write a program to check if a number is a perfect cube using a function.
• 1288. Write a program to find the first character that appears twice in a string.
• 1289. Write a program to implement a basic weather tracking application.
• 1290. Write a program to check if a number is a strong prime number using a function.
• 1291. Write a program to find the maximum product of three numbers in an array.
• 1292. Write a program to implement a simple budgeting application.
• 1293. Write a program to check if a string is a valid date in the format DD-MM-YYYY.
• 1294. Write a program to find the smallest number in a 2D array.
• 1295. Write a program to check if a string contains balanced parentheses using a function.
• 1296. Write a program to calculate the area of a triangle given its base and height.
• 1297. Write a program to find the first unique word in a sentence.
• 1298. Write a program to implement a simple contact management application with search functionality.
• 1299. Write a program to check if a number is an evil number using a function.
• 1300. Write a program to find the GCD of three numbers using recursion.
• 1301. Write a program to implement a basic character frequency counter.

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