arrays sort k-sorted array n max pair combinations brute force coding problems stock span problem rain water trapping problem largest rectangle area in a histogram floor and ceil value first and last occurrence of an element maximization of quadruple find minimum in rotated sorted array gcd queries...
}publicstaticMap<String, Integer>buildWordMap(StringfileName) {// Using diamond operator for clean codeMap<String, Integer>wordMap=newHashMap<>();// Using try-with-resource statement for automatic resource managementtry(FileInputStreamfis=newFileInputStream(fileName);DataInputStreamdis=newDataInput...