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1231-1240

1231. Divide Chocolate $\star\star\star$

1232. Check If It Is a Straight Line $\star$

1233. Remove Sub-Folders from the Filesystem $\star\star$

1234. Replace the Substring for Balanced String $\star\star$

1235. Maximum Profit in Job Scheduling $\star\star\star$

1236. Web Crawler $\star\star$

1237. Find Positive Integer Solution for a Given Equation $\star$

1238. Circular Permutation in Binary Representation $\star\star$

1239. Maximum Length of a Concatenated String with Unique Characters $\star\star$

1240. Tiling a Rectangle with the Fewest Squares $\star\star\star$