合并顺序数组
合并两个数组
给定含有n个元素的有序(非降序)整型数组a和含有m个元素的有序(非降序)整型数组b。合并两个数组中的元素到整型数组c,要求去除重复元素并保持c有序(非降序)。例子如下 a = 1, 2, 4, 8 b = 1, 3, 5, 8 c = 1, 2, 3, 4, 5, 8
- public class MergeArray {
- public static int[] doMerge(int[] a, int[] b) {
- int[] tmp = new int[a.length + b.length];
- tmp[0] = 0;
- int i = 0, j = 0, k = 0, count = 0;
- while (i <= a.length - 1 && j <= b.length - 1) {
- if (a[i] < b[j]) {
- if (a[i] != tmp[k]) {
- tmp[k++] = a[i++];
- count++;
- } else {
- i++;
- }
- } else if (a[i] > b[j]) {
- if (b[j] != tmp[k]) {
- tmp[k++] = b[j++];
- count++;
- } else {
- j++;
- }
- } else {
- if (a[i] != tmp[k]) {
- tmp[k++] = a[i++];
- count++;
- } else {
- i++;
- }
- j++;
- }
- }
- while (i <= a.length - 1) {
- if (a[i] != tmp[k]) {
- tmp[k++] = a[i++];
- count++;
- } else {
- i++;
- }
- }
- while (j <= b.length - 1) {
- if (b[j] != tmp[k]) {
- tmp[k++] = b[j++];
- count++;
- } else {
- j++;
- }
- }
- int[] c = new int[count];
- for (int m = 0; m <= count - 1 ; m++) {
- c[m] = tmp[m];
- }
- return c;
- }
- public static void main(String[] args) {
- int[] a = { 1, 2, 4, 8 };
- int[] b = { 1, 3, 5, 8 };
- int[] c = MergeArray.doMerge(a, b);
- for (int i = 0; i <= c.length - 1; i++) {
- System.out.print(c[i] + " ");
- }
- }
- }