# Some items in enumerate jump left out of margin

I have a boxed list in latex, and for some reason some items jump out of the box out of the left margin. I cannot figure out what is causing this and already have searched and tried some fixes. The code:

\begin{figure}
\centering
\caption{The Lin-Kernighan Modified Distance Algorithm}
\label{fig:LKMD}
\noindent

\fbox{
\parbox{\textwidth}{
{\fontfamily{lmtt}\selectfont
\begin{spacing}{1}
\begin{itemize}
\item Initialise the algorithm
\begin{enumerate}
\item Calculate for every item $s_i = \frac{p_i}{w_i}$ and rank them based on the score.
\item Pick items starting from the highest rank until the knapsack is full.
\item Set LB = 0\%.
\item Set UB = 20\%.
\item Set \epsilon = 0.1.
\item Set $Z^* = -inf$, the best improvement found so far.
\end{enumerate}
\item While UB - LB > \epsilon:
\begin{enumerate}
\item for C \in \{UB, LB\}
\item Modify the distance matrix:
$d'_{ij}$=\left\{
\begin{array}{ll}
$(1 - C) \cdot d_{ij} \text{ if } i \in N_h \text{ and } j \in N_1$\\
$(1 - C) \cdot d_{ij} \text{ if } i \in N_1 \text{ and } j \in N_1$\\
$(1 + C) \cdot d_{ij} \text{ if } i \in N_1 \text{ and } j \in N_0$\\
$(1 + C) \cdot d_{ij} \text{ if } i \in N_0 \text{ and } j \in N_1$\\
$d_{ij} \text{ else }$ \\
\end{array}
\right.
\item Run LK algorithm with modified distances and evaluate the objective function (OBJ) for LB and UB
\item
\end{enumerate}
\end{itemize}
\end{spacing}
}
}
}
\end{figure}


I also notice it is coming out weird here as qwll, but I don't know why...

I included a picture of the print out. • You must use math mode if you want to write math – harryparp Jun 19 at 15:03
• You tell the array to have two columns, yet you don't have any column sperators – harryparp Jun 19 at 15:06
• Thanks, this indeed fixed it... oops – wout konings Jun 19 at 15:06

Some improvements, with caption, enumitem and mathtools and the cases environment:

\documentclass{article}

\usepackage{setspace}
\usepackage{mathtools}
\usepackage{caption}
\usepackage{enumitem}

\begin{document}

\begin{figure}[!htb]
\centering
\caption{The Lin-Kernighan Modified Distance Algorithm}
\label{fig:LKMD}
\noindent

\fbox{
\parbox{\textwidth}{
{\fontfamily{lmtt}\selectfont
\begin{spacing}{1}
\begin{itemize}[wide=0pt, leftmargin=*]

\item Initialise the algorithm

\begin{enumerate}[wide=0pt, leftmargin=*]

\item Calculate for every item $s_i = \frac{p_i}{w_i}$ and rank them based on the score.

\item Pick items starting from the highest rank until the knapsack is full.

\item Set $LB = 0\%$.

\item Set $UB = 20\%$.

\item Set $\epsilon = 0.1$.

\item Set $Z^* = -inf$, the best improvement found so far.

\end{enumerate}

\item While $UB - LB > \epsilon$:

\begin{enumerate}[wide=0pt, leftmargin=*]
\item for $C \in \{UB, LB\}$

\item Modify the distance matrix:
$d'_{ij}= \begin{cases*} (1 - C) \cdot d_{ij} & if  i \in N_h  and  j \in N_1  \\ (1 - C) \cdot d_{ij} & if  i \in N_1  and  j \in N_1  \\ (1 + C) \cdot d_{ij} & if  i \in N_1  and  j \in N_0  \\ d_{ij} & otherwise \end{cases*}$

\item Run LK algorithm with modified distances and evaluate the objective function (OBJ) for LB and UB

\item
\end{enumerate}
\end{itemize}
\end{spacing}
}}}%
\end{figure}

\end{document} two problems:

• You must use math mode if you want to write math
• You tell the array to have two columns, yet you don't have any column separators

or summary:

• you must not ignore error messages

\documentclass{article}

\usepackage{setspace}
\usepackage{mathtools}

\begin{document}

\begin{figure}
\centering
\caption{The Lin-Kernighan Modified Distance Algorithm}
\label{fig:LKMD}
\noindent

\fbox{
\parbox{\textwidth}{
{\fontfamily{lmtt}\selectfont
\begin{spacing}{1}
\begin{itemize}

\item Initialise the algorithm

\begin{enumerate}

\item Calculate for every item $s_i = \frac{p_i}{w_i}$ and rank them based on the score.

\item Pick items starting from the highest rank until the knapsack is full.

\item Set $LB = 0\%$.

\item Set $UB = 20\%$.

\item Set $\epsilon = 0.1$.

\item Set $Z^* = -inf$, the best improvement found so far.

\end{enumerate}

\item While $UB - LB > \epsilon$:

\begin{enumerate}
\item for $C \in \{UB, LB\}$

\item Modify the distance matrix:
$d'_{ij}=\left\{ \begin{array}{ll} (1 - C) \cdot d_{ij} &\text{ if } i \in N_h \text{ and } j \in N_1\\ (1 - C) \cdot d_{ij} &\text{ if } i \in N_1 \text{ and } j \in N_1\\ (1 + C) \cdot d_{ij} &\text{ if } i \in N_1 \text{ and } j \in N_0\\ (1 + C) \cdot d_{ij} &\text{ if } i \in N_0 \text{ and } j \in N_1\\ d_{ij} &\text{ else } \\ \end{array} \right.$

\item Run LK algorithm with modified distances and evaluate the objective function (OBJ) for LB and UB

\item
\end{enumerate}
\end{itemize}
\end{spacing}
}
}
}
\end{figure}

\end{document} • Thanks! Stupid I didn't notice... – wout konings Jun 19 at 15:17