feat(joker-num): add solution to exercise

sh/tests/solutions/joker-num.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+
+# Loop for player one
+for (( ; ; ))
+do
+    echo "Player one, please enter a number between 1 and 100000 (inclusive) and press enter:"
+    read -rs number
+
+    # Check if input is empty
+    if [[ -z "$number" ]]
+    then
+        echo "Error: Input is empty, please try again."
+        continue
+    fi
+
+    # Check if input is a number
+    if ! [[ "$number" =~ ^[0-9]+$ ]]
+    then
+        echo "Error: Input is not a number, please try again."
+        continue
+    fi
+
+    # Check if input is between 1 and 100000 (inclusive)
+    if [[ "$number" -lt 1 || "$number" -gt 100000 ]]
+    then
+        echo "Error: Number out of range, please try again."
+        continue
+    fi
+    break
+done
+
+# Start the for loop for player two
+for (( ; ; ))
+do
+    echo "Player two, please enter your guess:"
+    read -r guess
+    if [[ -z "$guess" ]]
+    then
+        echo "Error: Input is empty"
+        continue
+    fi
+
+    # Check if input is a number
+    if ! [[ "$guess" =~ ^[0-9]+$ ]]
+    then
+        echo "Error: Input is not a number"
+        continue
+    fi
+
+    # Check if guess is correct
+    if [[ "$guess" -eq "$number" ]]
+    then
+        echo "Congratulations! You guessed the number."
+        break
+    fi
+
+    # Check if guess is too low or too high
+    if [[ "$guess" -lt "$number" ]]
+    then
+        echo "Go up."
+    else
+        echo "Go down."
+    fi
+done