From d2c6d14acd1a941e7153c33f441d73162c2dbcbb Mon Sep 17 00:00:00 2001
From: Oleksii Trekhleb <trehleb@gmail.com>
Date: Thu, 17 May 2018 08:08:29 +0300
Subject: [PATCH] Add Hamiltonian cycle.

---
 src/algorithms/graph/hamiltonian-cycle/hamiltonianCycle.js | 1 +
 src/algorithms/uncategorized/n-queens/nQueens.js           | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/algorithms/graph/hamiltonian-cycle/hamiltonianCycle.js b/src/algorithms/graph/hamiltonian-cycle/hamiltonianCycle.js
index 9f73a564..84562615 100644
--- a/src/algorithms/graph/hamiltonian-cycle/hamiltonianCycle.js
+++ b/src/algorithms/graph/hamiltonian-cycle/hamiltonianCycle.js
@@ -91,6 +91,7 @@ function hamiltonianCycleRecursive({
         cycle: currentCycle,
       });
 
+      // BACKTRACKING.
       // Remove candidate vertex from cycle path in order to try another one.
       currentCycle.pop();
     }
diff --git a/src/algorithms/uncategorized/n-queens/nQueens.js b/src/algorithms/uncategorized/n-queens/nQueens.js
index f0e7eb09..d96748d4 100644
--- a/src/algorithms/uncategorized/n-queens/nQueens.js
+++ b/src/algorithms/uncategorized/n-queens/nQueens.js
@@ -72,6 +72,7 @@ function nQueensRecursive(solutions, previousQueensPositions, queensCount, rowIn
       // Try to place all other queens as well.
       nQueensRecursive(solutions, queensPositions, queensCount, rowIndex + 1);
 
+      // BACKTRACKING.
       // Remove the queen from the row to avoid isSafe() returning false.
       queensPositions[rowIndex] = null;
     }