for (int i = 0; i < len; i++) { res[i] = valid(commands[i]); } return res; } static String valid(String com) { int l = 0; for (int i = 0; i < com.length(); i++) { char ch = com.charAt(i); if (ch == 'G') continue; if (ch == 'L') l++; if (ch ...
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Below are five examples of basic java problems. These questions are simple in nature, testing only one concept. They are meant to be solved in a collaborative integrated development environment (IDE). You can access the sample inputs, sample outputs, and base code for each question by ...
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If you are stuck, use the Discussion and Editorial sections for hints and solutions. Warm-up Challenges New to HackerRank? You can try these easy ones first See Challenges Arrays 70% of companies test this subject See Challenges Dictionaries and Hashmaps ...