此代码段向您展示了如何从另一个数字数组创建一个唯一数字数组。
package org.nhooo.example.lang; public class UniqueArray { /** * Return true if number num is appeared only once in the * array num is unique. */ public static boolean isUnique(int[] array, int num) { for (int i = 0; i < array.length; i++) { if (array[i] == num) { return false; } } return true; } /** * Convert the given array to an array with unique values * without duplicates and returns it. */ public static int[] toUniqueArray(int[] array) { int[] temp = new int[array.length]; for (int i = 0; i < temp.length; i++) { temp[i] = -1; // 如果你在数组中的值为0 } int counter = 0; for (int i = 0; i < array.length; i++) { if (isUnique(temp, array[i])) temp[counter++] = array[i]; } int[] uniqueArray = new int[counter]; System.arraycopy(temp, 0, uniqueArray, 0, uniqueArray.length); return uniqueArray; } /** * Print given array */ public static void printArray(int[] array) { for (int i = 0; i < array.length; i++) { System.out.print(array[i] + " "); } System.out.println(""); } public static void main(String[] args) { int[] array = {1, 1, 2, 3, 4, 1, 4, 7, 9, 7}; printArray(array); printArray(toUniqueArray(array)); } }
有关创建唯一数组的其他示例,请参见以下示例如何从数组中删除重复的元素?