Added spotless plugin.

build.gradle.kts

@@ -2,6 +2,7 @@ plugins {
     kotlin("jvm") version "1.6.10"
     jacoco
     id("org.sonarqube") version "3.3"
+    id("com.diffplug.spotless") version "6.1.2"
     `maven-publish`
 }
 
@@ -38,6 +39,17 @@ tasks.withType<JavaCompile>() {
     options.encoding = "UTF-8"
 }
 
+spotless {
+    kotlin {
+        encoding("UTF-8")
+        target("**/*.kt")
+        ktlint("0.43.0")
+        toggleOffOn()
+        trimTrailingWhitespace()
+        endWithNewline()
+    }
+}
+
 tasks {
   jacocoTestReport {
     reports {

src/main/kotlin/g0001_0100/s0004_median_of_two_sorted_arrays/Solution.kt

@@ -22,4 +22,3 @@ class Solution {
         return f
     }
 }
-

src/main/kotlin/g0001_0100/s0005_longest_palindromic_substring/Solution.kt

@@ -32,4 +32,4 @@ class Solution {
         }
         return s.substring((lpsCenter - lpsRadius + 1) / 2, (lpsCenter + lpsRadius - 1) / 2)
     }
-}
+}

src/main/kotlin/g0001_0100/s0006_zigzag_conversion/Solution.kt

@@ -29,4 +29,4 @@ class Solution {
         }
         return buf.toString()
     }
-}
+}

src/main/kotlin/g0001_0100/s0009_palindrome_number/Solution.kt

@@ -2,15 +2,14 @@ package g0001_0100.s0009_palindrome_number
 
 class Solution {
     fun isPalindrome(x: Int): Boolean {
-    if (x < 0) return false
-    var rev = 0
-    var localX = x
-    while (localX > 0)
-    {
-      rev *= 10
-      rev += localX % 10
-      localX /= 10
-    }
-    return rev == x
+        if (x < 0) return false
+        var rev = 0
+        var localX = x
+        while (localX > 0) {
+            rev *= 10
+            rev += localX % 10
+            localX /= 10
+        }
+        return rev == x
     }
 }

src/main/kotlin/g0001_0100/s0010_regular_expression_matching/Solution.kt

@@ -25,4 +25,4 @@ class Solution {
         cache[i][j] = result
         return result
     }
-}
+}

src/main/kotlin/g0001_0100/s0012_integer_to_roman/Solution.kt

@@ -55,4 +55,4 @@ class Solution {
         }
         return num - div * one
     }
-}
+}

src/main/kotlin/g0001_0100/s0013_roman_to_integer/Solution.kt

@@ -32,4 +32,4 @@ class Solution {
         }
         return localX
     }
-}
+}

src/main/kotlin/g0801_0900/s0864_shortest_path_to_get_all_keys/Solution.kt

@@ -1,6 +1,7 @@
 package g0801_0900.s0864_shortest_path_to_get_all_keys
 
-import java.util.*
+import java.util.LinkedList
+import java.util.Queue
 
 class Solution {
     private var m = 0
@@ -75,8 +76,8 @@ class Solution {
                     // use & to see if we have the key
                     // 0 means that the digit we are looking at is 0
                     // need a 1 at the digit spot which means there is a key there
-                    if (('A' > grid[nx][ny] || grid[nx][ny] > 'F' || nState and (1 shl grid[nx][ny] - 'A') != 0)
-                        && !visited[nx][ny][nState]
+                    if (('A' > grid[nx][ny] || grid[nx][ny] > 'F' || nState and (1 shl grid[nx][ny] - 'A') != 0) &&
+                        !visited[nx][ny][nState]
                     ) {
                         q.add(intArrayOf(nx, ny, nState))
                         visited[nx][ny][nState] = true

src/test/kotlin/g0001_0100/s0011_container_with_most_water/SolutionTest.kt

@@ -7,6 +7,6 @@ import org.junit.jupiter.api.Test
 class SolutionTest {
     @Test
     fun isPalindrome() {
-        assertThat(Solution().maxArea(intArrayOf(1,8,6,2,5,4,8,3,7)), equalTo(49))
+        assertThat(Solution().maxArea(intArrayOf(1, 8, 6, 2, 5, 4, 8, 3, 7)), equalTo(49))
     }
 }

src/test/kotlin/g0001_0100/s0012_integer_to_roman/SolutionTest.kt

@@ -2,7 +2,6 @@ package g0001_0100.s0012_integer_to_roman
 
 import org.hamcrest.CoreMatchers.equalTo
 import org.hamcrest.MatcherAssert.assertThat
-
 import org.junit.jupiter.api.Test
 
 class SolutionTest {
@@ -15,4 +14,4 @@ class SolutionTest {
         assertThat(solution.intToRoman(58), equalTo("LVIII"))
         assertThat(solution.intToRoman(1994), equalTo("MCMXCIV"))
     }
-}
+}

src/test/kotlin/g0001_0100/s0013_roman_to_integer/SolutionTest.kt

@@ -2,7 +2,6 @@ package g0001_0100.s0013_roman_to_integer
 
 import org.hamcrest.CoreMatchers.equalTo
 import org.hamcrest.MatcherAssert.assertThat
-
 import org.junit.jupiter.api.Test
 
 class SolutionTest {
@@ -15,5 +14,4 @@ class SolutionTest {
         assertThat(solution.romanToInt("LVIII"), equalTo(58))
         assertThat(solution.romanToInt("MCMXCIV"), equalTo(1994))
     }
-
-}
+}

src/test/kotlin/g0801_0900/s0864_shortest_path_to_get_all_keys/SolutionTest.kt

@@ -2,7 +2,6 @@ package g0801_0900.s0864_shortest_path_to_get_all_keys
 
 import org.hamcrest.CoreMatchers.equalTo
 import org.hamcrest.MatcherAssert.assertThat
-
 import org.junit.jupiter.api.Test
 
 internal class SolutionTest {