Sudoku is a puzzle game that first appeared in the 18th Century. The puzzle consists of a 3x3 grid of 3x3 cells. A cell is a space where a single number can be filled in. In traditional Sudoku, a cell can be any number between 1 and 9 inclusive. A 3x3 grid of cells is called a block; For this implementation, a 3x3 grid of blocks is called a board. The goal is to fill every cell on the board with a number without having any duplicate numbers in any of the rows, columns and blocks. This is a more general version of Sudoku where an m × n grid is used. For clarity reasons, I use the variables:numRows×numCols. In this format, every cell can contain the values [1,numRows ∗ numCols], and the normal no duplicate rule applies. For example, in a 2x3 grid, the values [1,2*3] = [1,6] are allowed. Thus each row, column and grid must contain the values 1 through 6.

• Linked Lists
• 3D Sparse Table

• Sole Candidate
• Unique Candidate
• Duplicate Cells

• Run WSL as Administrator
• set -ex
• NB: Update links for other JDK Versions
• export JDK_URL=http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/jdk-8u131-linux-x64.tar.gz
• export UNLIMITED_STRENGTH_URL=http://download.oracle.com/otn-pub/java/jce/8/jce_policy-8.zip
• wget --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" ${JDK_URL}
• Extract the archive: tar -xzvf jdk-*.tar.gz
• Clean up the tar: rm -fr jdk-*.tar.gz
• Make the jvm dir: sudo mkdir -p /usr/lib/jvm
• Move the server jre: sudo mv jdk1.8* /usr/lib/jvm/oracle_jdk8
• Install unlimited strength policy: wget --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" ${UNLIMITED_STRENGTH_URL}
• unzip jce_policy-8.zip
• mv UnlimitedJCEPolicyJDK8/local_policy.jar /usr/lib/jvm/oracle_jdk8/jre/lib/security/
• mv UnlimitedJCEPolicyJDK8/US_export_policy.jar /usr/lib/jvm/oracle_jdk8/jre/lib/security/
• sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/oracle_jdk8/jre/bin/java 2000
• sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/oracle_jdk8/bin/javac 2000
• sudo echo "export J2SDKDIR=/usr/lib/jvm/oracle_jdk8 export J2REDIR=/usr/lib/jvm/oracle_jdk8/jre export PATH=$PATH:/usr/lib/jvm/oracle_jdk8/bin:/usr/lib/jvm/oracle_jdk8/db/bin:/usr/lib/jvm/oracle_jdk8/jre/bin export JAVA_HOME=/usr/lib/jvm/oracle_jdk8 export DERBY_HOME=/usr/lib/jvm/oracle_jdk8/db" | sudo tee -a /etc/profile.d/oraclejdk.sh