2a26ca87-4d15-40cc-9e84-61aab5f02dde 54 4 5 false false 0 decimal

&[DATE] &[TIME] - &[FILENAME]

Matrix delete col/row

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4 - appVersion 0.99.7822.147

4 - appVersion 0.99.7822.147

Alternate:PROGRAM 1 : Del 'col' M# m Del_Col nc M# cols : nr M# rows : N# M# 1 nr range 2 nc range el m 1 ≡ M# 1 nr range 1 nc 1 - (range el m nc ≡ A1 M# 1 nr range 1 m 1 - (range el : A2 M# 1 nr range m 1 + (nc (range el : A3 A1 A2 augment : 31 line cases : N# 41 line :

Alternate:PROGRAM - NDTMA M# m T_Minor nc M# cols : nr M# rows : N# M# 1 nr range 2 nc range el m 1 ≡ M# 1 nr range 1 nc 1 - (range el m nc ≡ M# m 0 ≡ (m nc > (| A1 M# 1 nr range 1 m 1 - (range el : A2 M# 1 nr range m 1 + (nc (range el : A3 A1 A2 augment : 31 line cases : N# 41 line :

ALTERNATE PROGRAM 2 : Del 'col & row' M# col row Del_Col_Row M# col Del_Col transpose row Del_Col transpose :

Original by Jean

Define a LARGE Matrix to find execution time

M 300100 Random : 0.72 0.89 0.7 0.26 0.14 0.33 0.1 0.21 0.88 0.78 0.76 0.94 0.84 0.12 0.35 0.42 0.26 0.73 0.16 0.72 0.26 0.32 0.89 0.29 0.6 0.6 0.28 0.53 47 mat

M rows 300

M cols 100

M length 30000

t1 0 time :

Dele 'col' M 3 Del_Col 0.72 0.89 0.26 0.14 0.33 0.1 0.38 0.09 0.21 0.88 0.76 0.94 0.84 0.12 0.66 0.68 0.35 0.42 0.73 0.16 0.72 0.26 0.79 0.37 0.32 0.89 0.6 0.6 0.28 0.53 0.35 0.15 48 mat

0 time t1 - s 0.5

Delete 'row' M transpose 3 Del_Col transpose 0.72 0.89 0.7 0.26 0.14 0.33 0.1 0.38 0.21 0.88 0.78 0.76 0.94 0.84 0.12 0.66 0.32 0.89 0.29 0.6 0.6 0.28 0.53 0.35 0.03 0.27 0.5 0.64 0.51 0.58 0.25 0.01 48 mat

t1 0 time :

0 time t1 - s 0

t1 0 time :

Delete 'col' & 'row M 32 Del_Col_Row 0.72 0.89 0.26 0.14 0.33 0.1 0.38 0.35 0.42 0.73 0.16 0.72 0.26 0.79 0.32 0.89 0.6 0.6 0.28 0.53 0.35 0.03 0.27 0.64 0.51 0.58 0.25 0.01 47 mat

20 Times FASTER

0 time t1 - s 3.9