Algo holics

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Project Name Goes here

Team Members

1. Sukhbeer Dhillon, Responsibilities...
2. Gurpreet Singh, Some other responsibility
3. Edgar Giang, Some other other responsibility
4. Email All

Progress

Assignment 1

Sudoku Solver

Is it a program that solves Sudoku puzzles(9X9) using Bruteforce algorithm. Either the user can pass a Sudoku files as an input or enter the values manually. Moreover, the file or the manual entry should have strictly 9 rows and 9 columns in them. Lastly, all the cells should be separated by a space and the cells that needs to be solved should have 0 in them as their value.

The original source code can be found at Link

LOGIC

In this program the Bruteforce algorithm first put 1 in the first cell and then check if it is violating any rules. If yes, then it increment the value to 2 and check again (The value can vary from 1-9) until it finds the appropriate value. After finding a suitable value for the first cell, it moves to the second cell and put 1 in there and again check again if it violating any rules. If it is discovers that 1 is not allowed in that cell, then the algorithm will increment it to 2 and check again.

Compiling the program

  g++ -std=c++0x -pg solver.cpp checks.cpp checksolution.cpp -o a
  a fileName

-pg directs the compiler to include the executable code required for profiling.

-o directs the compiler to name the executable a.

If we run the sample-puzzle-1 (level- easy) file

Text inside the sample-puzzle-1 is:

       0 6 0 0 0 0 9 7 2
       0 5 0 0 0 2 0 0 3
       0 7 0 3 9 0 5 0 0
       2 0 0 0 0 5 4 0 8
       0 0 0 0 0 0 0 0 0
       3 0 1 8 0 0 0 0 6
       0 0 4 0 2 3 0 8 0
       7 0 0 9 0 0 0 2 0
       9 2 5 0 0 0 0 4 0

The output will be:

       1 6 3 4 5 8 9 7 2
       4 5 9 7 1 2 8 6 3
       8 7 2 3 9 6 5 1 4
       2 9 7 1 6 5 4 3 8
       5 8 6 2 3 4 1 9 7
       3 4 1 8 7 9 2 5 6
       6 1 4 5 2 3 7 8 9
       7 3 8 9 4 1 6 2 5
       9 2 5 6 8 7 3 4 1

Analysis

To analyze the flat profile, enter the following command:

       gprof -p -b myapp > myapp.flt

-p directs the profiler (gprof) to output a flat profile. -b directs the profiler to omit detailed explanations of the column headings from the output.

To analyze the call graph, enter the following command:

> gprof -q -b myapp > myapp.clg

-q directs the profiler (gprof) to output a call graph. -b directs the profiler to omit detailed explanations of the column headings from the output.