1221-1230 1221. Split a String in Balanced Strings $\star$ 1222. Queens That Can Attack the King $\star\star$ 1223. Dice Roll Simulation $\star\star$ 1224. Maximum Equal Frequency $\star\star\star$ 1225. Report Contiguous Dates $\star\star\star$ 1226. The Dining Philosophers $\star\star$ 1227. Airplane Seat Assignment Probability $\star\star$ 1228. Missing Number In Arithmetic Progression $\star$ 1229. Meeting Scheduler $\star\star$ 1230. Toss Strange Coins $\star\star$