# How to sort a Scala Map by value

In this article, we will learn how to sort a Scala Map by value. We can sort the map by key, from low to high or high to low, using sortBy method.
Syntax:

`MapName.toSeq.sortBy(_._2):_*`

Let’s try to understand it with better example.

Example #1:

 `// Scala program to sort given map by value ` `import` `scala.collection.immutable.ListMap ` ` `  `// Creating object  ` `object` `GfG  ` `{  ` ` `  `    ``// Main method  ` `    ``def` `main(args``:``Array[String])  ` `    ``{  ` `     `  `        ``// Creating a map  ` `        ``val` `mapIm ``=` `Map(``"Zash"` `-``>` `30``,  ` `                        ``"Jhavesh"` `-``>` `20``,  ` `                        ``"Charlie"` `-``>` `50``)  ` `         `  `         `  `        ``// Sort the map by value ` `        ``val` `res ``=` `ListMap(mapIm.toSeq.sortBy(``_``.``_``2``)``:_``*) ` `        ``println(res) ` `    ``}  ` `}  `

Output:

```Map(Jhavesh -> 20, Zash -> 30, Charlie -> 50)
```

In above example, we can see `mapIm.toSeq.sortBy` method is used to sort the map by key values.

Example #2:

 `// Scala program to sort given map by value ` `// in ascending order ` `import` `scala.collection.immutable.ListMap ` ` `  `// Creating object  ` `object` `GfG  ` `{  ` ` `  `    ``// Main method  ` `    ``def` `main(args``:``Array[String])  ` `    ``{  ` `     `  `        ``// Creating a map  ` `        ``val` `mapIm ``=` `Map(``"Zash"` `-``>` `30``,  ` `                        ``"Jhavesh"` `-``>` `20``,  ` `                        ``"Charlie"` `-``>` `50``)  ` `         `  `        ``// Sort map value in ascending order ` `        ``val` `res ``=` `ListMap(mapIm.toSeq.sortWith(``_``.``_``2` `<` `_``.``_``2``)``:_``*) ` `        ``println(res) ` `    ``}  ` `}  `

Output:

```Map(Jhavesh -> 20, Zash -> 30, Charlie -> 50)
```

Here, In above example we are sorting map in ascending order by using `mapIm.toSeq.sortWith(_._2 < _._2):_*`
Example #3:

 `// Scala program to sort given map by value ` `// in decending order ` `import` `scala.collection.immutable.ListMap ` ` `  `// Creating object  ` `object` `GfG  ` `{  ` ` `  `    ``// Main method  ` `    ``def` `main(args``:``Array[String])  ` `    ``{  ` `     `  `        ``// Creating a map  ` `        ``val` `mapIm ``=` `Map(``"Zash"` `-``>` `30``,  ` `                        ``"Jhavesh"` `-``>` `20``,  ` `                        ``"Charlie"` `-``>` `50``)  ` `         `  `        ``// Sort map value in descending order ` `        ``val` `res ``=` `ListMap(mapIm.toSeq.sortWith(``_``.``_``2` `>` `_``.``_``2``)``:_``*) ` `        ``println(res) ` `    ``}  ` `}  `

Output:

```Map(Charlie -> 50, Zash -> 30, Jhavesh -> 20)
```

Above example show to sorting map in descending order.

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