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test number zero : default constructor and string converter
matrix0 = class=SparseMatrix rows=0 columns=0 triplets=[]
test number one : constructor with size, operator() and string converter
matrix1 = class=SparseMatrix rows=4 columns=5 triplets=[[1,0,8],[0,2,5],[3,2,9],[2,4,2]]
matrix1 as dense = 4x5
[[ 0 0 5 0 0 ]
[ 8 0 0 0 0 ]
[ 0 0 0 0 2 ]
[ 0 0 9 0 0 ]]
test number two : copy constructor and string converter
matrix2 = class=SparseMatrix rows=4 columns=5 triplets=[[1,0,8],[0,2,5],[3,2,9],[2,4,2]]
test number three : get dimensions methods
matrix1's nbRows = 4
matrix1's nbColumns = 5
matrix1's nbNonZeros = 4
test number six : transposition method
matrix1 transposed = 5x4
[[ 0 8 0 0 ]
[ 0 0 0 0 ]
[ 5 0 0 9 ]
[ 0 0 0 0 ]
[ 0 0 2 0 ]]
pt = class=Point name=Unnamed dimension=5 values=[1,2,3,4,5]
ptResult = class=Point name=Unnamed dimension=4 values=[15,8,10,27]
dense1=5x6
[[ 0 10 20 30 40 50 ]
[ 1 11 21 31 41 51 ]
[ 2 12 22 32 42 52 ]
[ 3 13 23 33 43 53 ]
[ 4 14 24 34 44 54 ]]
sparse*dense=4x6
[[ 10 60 110 160 210 260 ]
[ 0 80 160 240 320 400 ]
[ 8 28 48 68 88 108 ]
[ 18 108 198 288 378 468 ]]
same=true
matrix3=class=SparseMatrix rows=4 columns=5 triplets=[[1,0,8],[0,2,5],[3,2,9],[2,4,2]]
matrix3 as dense = 4x5
[[ 0 0 5 0 0 ]
[ 8 0 0 0 0 ]
[ 0 0 0 0 2 ]
[ 0 0 9 0 0 ]]
ptResult = class=Point name=Unnamed dimension=4 values=[15,8,10,27]
matrix3(2, 4)=2
matrix3(2, 4)=8
matrix5=class=SparseMatrix rows=4 columns=5 triplets=[[1,0,8],[0,2,5],[3,2,9],[2,4,2],[2,4,2]]
matrix5 as dense = 4x5
[[ 0 0 5 0 0 ]
[ 8 0 0 0 0 ]
[ 0 0 0 0 4 ]
[ 0 0 9 0 0 ]]
ptResult = class=Point name=Unnamed dimension=4 values=[15,8,20,27]
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