Answer
Let's denote the U marker as / the C marker as /
The list $[4,8,2,6]$
$-$ Set $\mathrm{U}$ at the end $;[4,8,2,6 /]$
$-$ Set $C$ at the second; $| 4 / 8,2,6 /$
$-$ since $8>4$ simply move $C$ to the right $| 4,8, / 2,6 /]$
$-$ Now $2<8$ so exchange them and move $C :[4,2,8, / 6 /]$
$-6<8$ so exchange, move $C :[4,2,6,8 / /]$
$-$ C has reached U so move U to the left and $C$ to the second element again:$[4,/2,6/8]$
$-2<4,$ exchange, move $\mathrm{C} :[2,4, / 6, / 8 |$
$-$ Just move $C :[2,4,6, / / 8 |$
- Move U to the left, and $C$ to the second: $[2/4/6,8]$
- Continue until U reaches the first element.
Work Step by Step
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