JavaSE中你想看的例子——数组去掉重复数
要求将以下数组中值为 0 的项去掉,其他值存进一个新数组
int[] oldArr = {1,3,4,5,0,0,6,6,0,5,4,7,6,7,0,5};
package chapter.three; import java.util.Arrays; public class Test02 { public static void main(String[] args) { int[] oldArr = {1,3,4,5,0,0,6,6,0,5,4,7,6,7,0,5}; //新数组的长度 int lengths = 0; //获取新数组的长度 for (int i = 0; i < oldArr.length; i++) { if (oldArr[i] != 0) { lengths++; } } //获取到新数组长度后,创建新数组 int[] newArr = new int[lengths]; //用自己的j,不用i,是因为旧数组有可能比新数组长,而导致溢出 int j = 0; //循环将不为0的值存进新数组 for (int i = 0; i < oldArr.length; i++) { if (oldArr[i] != 0) { newArr[j] = oldArr[i]; j++; } } System.out.println(Arrays.toString(newArr)); } }
结果:
[1, 3, 4, 5, 6, 6, 5, 4, 7, 6, 7, 5]