fixed utils (examplehub#114)

realDuYuanChao · web-flow · commit df73f5ec0afb · 2021-04-26T13:54:37.000+08:00
diff --git a/src/main/java/com/examplehub/utils/RandomUtils.java b/src/main/java/com/examplehub/utils/RandomUtils.java
@@ -19,7 +19,7 @@ public static int[] randomInts(int min, int max, int count) {
     int[] ints = new int[count];
     Random random = new Random();
     for (int i = 0; i < count; ++i) {
-      ints[i] = random.nextInt(max - min + 1) + min;
+      ints[i] = min + random.nextInt(max - min + 1);
     }
     return ints;
   }
diff --git a/src/main/java/com/examplehub/utils/SortUtils.java b/src/main/java/com/examplehub/utils/SortUtils.java
@@ -32,31 +32,4 @@ public static <T extends Comparable<T>> boolean isSorted(T[] array) {
     }
     return true;
   }
-
-  /**
-   * Swapped array elements at different index.
-   *
-   * @param numbers the numbers to be swapped.
-   * @param i the first index.
-   * @param j the second index.
-   */
-  public static void swap(int[] numbers, int i, int j) {
-    int temp = numbers[i];
-    numbers[i] = numbers[j];
-    numbers[j] = temp;
-  }
-
-  /**
-   * Generic swapped array elements at different index.
-   *
-   * @param numbers the numbers to be swapped.
-   * @param i the first index.
-   * @param j the second index.
-   * @param <T> the class of the objects in the array.
-   */
-  public static <T extends Comparable<T>> void swap(T[] numbers, int i, int j) {
-    T temp = numbers[i];
-    numbers[i] = numbers[j];
-    numbers[j] = temp;
-  }
 }

Original file line number	Diff line number	Diff line change
`@@ -19,7 +19,7 @@ public static int[] randomInts(int min, int max, int count) {`
`19`	`19`	`int[] ints = new int[count];`
`20`	`20`	`Random random = new Random();`
`21`	`21`	`for (int i = 0; i < count; ++i) {`
`22`		`- ints[i] = random.nextInt(max - min + 1) + min;`
	`22`	`+ ints[i] = min + random.nextInt(max - min + 1);`
`23`	`23`	`}`
`24`	`24`	`return ints;`
`25`	`25`	`}`