$A≔\mathrm{Vector}\left['\mathrm{row}'\right]\left(\left[1\,2\,3\,4\,5\right]\right)$

$A≔\left[\begin{array}{ccccc}1& 2& 3& 4& 5\end{array}\right]$

$B≔\mathrm{Vector}\left['\mathrm{row}'\right]\left(\left[6\,7\right]\right)$

$B≔\left[\begin{array}{cc}6& 7\end{array}\right]$

$U≔\mathrm{Insert}\left(A\,1\,B\right)$

$U≔\left[\begin{array}{ccccccc}6.& 7.& 1.& 2.& 3.& 4.& 5.\end{array}\right]$

$V≔\mathrm{Insert}\left(A\,4\,B\right)$

$V≔\left[\begin{array}{ccccccc}1.& 2.& 3.& 6.& 7.& 4.& 5.\end{array}\right]$

$W≔\mathrm{Insert}\left(A\,6\,B\right)$

$W≔\left[\begin{array}{ccccccc}1.& 2.& 3.& 4.& 5.& 6.& 7.\end{array}\right]$

$P≔\mathrm{Vector}\left['\mathrm{column}'\right]\left(\left[0.803716108032327\,-0.356056399933928\,0.933528218742667\,0.0114341122580131\,0.554152583724131\right]\,'\mathrm{datatype}'='\mathrm{float}\left[8\right]'\right)$

$P≔\left[\begin{array}{c}0.803716108032327\\ \mathrm{-0.356056399933928}\\ 0.933528218742667\\ 0.0114341122580131\\ 0.554152583724131\end{array}\right]$

$Q≔\mathrm{Vector}\left['\mathrm{row}'\right]\left(\left[-0.0882886912893828\,0.561179894580472\,0.588474727401137\,0.926146043843513\,0.821206761885317\right]\,'\mathrm{datatype}'='\mathrm{float}\left[8\right]'\right)$

$Q≔\left[\begin{array}{ccccc}\mathrm{-0.0882886912893828}& 0.561179894580472& 0.588474727401137& 0.926146043843513& 0.821206761885317\end{array}\right]$

$\mathrm{Insert}\left(P\,2\,Q\,'\mathrm{inplace}'\right)\:$

$'P'=P$

$P=\left[\begin{array}{c}0.803716108032327\\ \mathrm{-0.0882886912893828}\\ 0.561179894580472\\ 0.588474727401137\\ 0.926146043843513\\ 0.821206761885317\\ \mathrm{-0.356056399933928}\\ 0.933528218742667\\ 0.0114341122580131\\ 0.554152583724131\end{array}\right]$

$G≔\left[1\,2-3\mathrm{I}\,5+6\mathrm{I}\right]$

$G≔\left[1\,2-3\mathrm{I}\,5+6\mathrm{I}\right]$

$H≔\left[4\right]$

$H≔\left[4\right]$

$\mathrm{Insert}\left(G\,3\,H\right)$

$\left[\begin{array}{c}1.+0.\mathrm{I}\\ 2.-3.\mathrm{I}\\ 4.+0.\mathrm{I}\\ 5.+6.\mathrm{I}\end{array}\right]$

$n≔2^{10}\:$

$X≔\mathrm{GenerateSignal}\left(\sin \left(4t\right)+5\,t=0..2\mathrm{\pi }\,n\,'\mathrm{includefinishtime}'='\mathrm{false}'\right)\:$

$Y≔\mathrm{GenerateSignal}\left(\frac{1}{10}\sin \left(40t\right)+5\,t=0..2\mathrm{\pi }\,n\,'\mathrm{includefinishtime}'='\mathrm{false}'\right)\:$

$Z≔\mathrm{Insert}\left(X\,\mathrm{floor}\left(\frac{n}{2}\right)+1\,Y\right)\:$

$\mathrm{SignalPlot}\left(Z\,'\mathrm{view}'=\left['\mathrm{DEFAULT}'\,0..10\right]\,'\mathrm{color}'='\mathrm{blue}'\right)$

$m≔{10}^5$

$m≔100000$

$n≔\mathrm{floor}\left(\frac{2}{3}m\right)$

$n≔66666$

$A≔\mathrm{LinearAlgebra}:-\mathrm{RandomVector}\left(m\,'\mathrm{generator}'=-5.0..5.0\,'\mathrm{datatype}'='\mathrm{complex}\left[8\right]'\right)$

$A≔\begin{array}{c}\left[\begin{array}{c}\mathrm{-0.0917383737863284}+2.13912325874864\mathrm{I}\\ \mathrm{-3.39854682246889}+3.49786418049004\mathrm{I}\\ \mathrm{-2.59564823185160}-1.78383585689513\mathrm{I}\\ 3.24486104632469+0.895908298152884\mathrm{I}\\ \mathrm{-0.362935391020486}+2.31720737051418\mathrm{I}\\ \mathrm{-2.09070685601688}+0.815907533479054\mathrm{I}\\ \mathrm{-0.693638170304207}+0.315918805455907\mathrm{I}\\ 4.57091864654335+2.61722374093498\mathrm{I}\\ \mathrm{-3.68294960599541}+3.20691408998534\mathrm{I}\\ \mathrm{-1.22788436311340}-2.39044573657899\mathrm{I}\\ ⋮\end{array}\right]\\ \hfill \text{100000 element Vector[column]}\end{array}$

$B≔\mathrm{LinearAlgebra}:-\mathrm{RandomVector}\left(n\,'\mathrm{generator}'=-5.0..5.0\,'\mathrm{datatype}'='\mathrm{complex}\left[8\right]'\right)$

$B≔\begin{array}{c}\left[\begin{array}{c}\mathrm{-4.14267742232442}-3.51051319815677\mathrm{I}\\ \mathrm{-0.476582854156399}+3.13480576149592\mathrm{I}\\ 3.93630307721684+3.71363640103653\mathrm{I}\\ 1.78944820932699-1.58190977422684\mathrm{I}\\ 0.801823487528903+2.04706019479377\mathrm{I}\\ 1.81849787205073-2.31204470134407\mathrm{I}\\ \mathrm{-3.08889695735301}+3.45093746504436\mathrm{I}\\ 1.96874658944417-3.49513013073011\mathrm{I}\\ 0.920907021678026+2.13975559787115\mathrm{I}\\ \mathrm{-3.10131345103975}-4.42719506129223\mathrm{I}\\ ⋮\end{array}\right]\\ \hfill \text{66666 element Vector[column]}\end{array}$

$\mathrm{CodeTools}:-\mathrm{Usage}\left(\mathrm{Insert}\left(A\,\mathrm{floor}\left(\frac{n}{2}\right)\,B\right)\right)$

memory used=2.57MiB, alloc change=2.55MiB, cpu time=2.00ms, real time=2.00ms, gc time=0ns

$\begin{array}{c}\left[\begin{array}{c}\mathrm{-0.0917383737863284}+2.13912325874864\mathrm{I}\\ \mathrm{-3.39854682246889}+3.49786418049004\mathrm{I}\\ \mathrm{-2.59564823185160}-1.78383585689513\mathrm{I}\\ 3.24486104632469+0.895908298152884\mathrm{I}\\ \mathrm{-0.362935391020486}+2.31720737051418\mathrm{I}\\ \mathrm{-2.09070685601688}+0.815907533479054\mathrm{I}\\ \mathrm{-0.693638170304207}+0.315918805455907\mathrm{I}\\ 4.57091864654335+2.61722374093498\mathrm{I}\\ \mathrm{-3.68294960599541}+3.20691408998534\mathrm{I}\\ \mathrm{-1.22788436311340}-2.39044573657899\mathrm{I}\\ ⋮\end{array}\right]\\ \hfill \text{166666 element Vector[column]}\end{array}$