Add Remove All Whitespace in Kotlin (#5004)

Implemented RemoveAllWhitespace

Author: jrg94

archive/k/kotlin/RemoveAllWhitespace.kt

@@ -0,0 +1,22 @@
+import kotlin.system.exitProcess
+
+fun main(args: Array<String>) {
+    val phrase: String = errorChecking(args)
+    println(removeWhitespace(phrase))
+}
+
+fun usageError() {
+    println("Usage: please provide a string")
+}
+
+fun errorChecking(args: Array<String>): String {
+    if (args.size == 0 || args[0] == "") {
+       usageError()
+       exitProcess(1)
+    }
+    return args[0]
+}
+
+fun removeWhitespace(phrase: String): String {
+    return phrase.filter { !it.isWhitespace() }
+}