题目内容

11 The purpose of compressed storage of sparse matrix is ( ).

A. to save storage space
B. facilitating matrix operations
C. easy input and output
D. reducing the time complexity of operations

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12 The number of elements in array A[0...4,-1...-3,5...7] is ( ).

A. 45
B. 55
C. 36
D. 16

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13 Each element of the array A[0...5,0...6] occupies 5 bytes, and it is stored in column-major order in memory whit a starting address of 1000, then the address of element A[5,5] is ( ).

A. 1175
B. 1180
C. 1205
D. 1210

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14 In triple sequence table of sparse matrix, each triple represents ( ).

A. the row number,column number and data value of non-zero elements in the matrix
B. the data value of non-zero elements in the matrix
C. the row and column numbers of elements in the matrix
D. the row number,column number and data value of elements in the matrix

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15 After compressing and storing the following matrix, it is ( ) that loses the random access function.

A. sparse matrix
B. symmetric matrix
C. triangular matrix
D. tridiagonal matrix

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11 The purpose of compressed storage of sparse matrix is ( ).

A. to save storage space B. facilitating matrix operations C. easy input and output D. reducing the time complexity of operations

12 The number of elements in array A[0...4,-1...-3,5...7] is ( ).

13 Each element of the array A[0...5,0...6] occupies 5 bytes, and it is stored in column-major order in memory whit a starting address of 1000, then the address of element A[5,5] is ( ).

14 In triple sequence table of sparse matrix, each triple represents ( ).

15 After compressing and storing the following matrix, it is ( ) that loses the random access function.

A. to save storage space
B. facilitating matrix operations
C. easy input and output
D. reducing the time complexity of operations