n

Iter

$\Vert x-z\Vert$

${\Vert \widehat{x}\Vert }_0$

${\Vert x\Vert }_0$

Time (sec.)

1000

468

8.5467E−07

10

10

2.64

3000

159

7.8034E−07

30

30

16.84

5000

105

9.4924E−07

50

50

37.59

7000

103

7.4224E−07

70

70

73.59

10,000

101

9.5524E−07

100

100

148.94