1 import java.util.ArrayList;
2 import java.util.List;
3
4 public class LeetCodeTest {
5 public static void main(String[] args) {
6
7 int[] intArr=new int[]{2,7,11,15};
8 List<CustomerIntIndex> customerIntIndexList=getArrIndex(intArr,9);
9 System.out.println(customerIntIndexList);
10 }
11
12 public static List<CustomerIntIndex> getArrIndex(int[] intArr, int targetNum){
13 int length = intArr.length;
14 int resultVal=1;
15 for (int i = 0; i < 4; i++) {
16 resultVal*=10;
17 }
18
19 if(length<2 || length>resultVal){
20 return null;
21 }
22
23 int resultVal1=1;
24 for (int i = 0; i < 9; i++) {
25 resultVal1*=10;
26 }
27 resultVal1=resultVal1*(-1);
28 int resultVal2=1;
29 for (int i = 0; i < 9; i++) {
30 resultVal2*=10;
31 }
32 if(targetNum<resultVal1 || targetNum>resultVal2){
33 return null;
34 }
35
36 for (int i = 0; i < intArr.length; i++) {
37 int intElement=intArr[i];
38 if(intElement<resultVal1 || intElement>resultVal2){
39 return null;
40 }
41 }
42
43 ArrayList<CustomerIntIndex> arrayList = new ArrayList<CustomerIntIndex>();
44 for (int i = 0; i < intArr.length-1; i++) {
45 int intArrayEle = intArr[i];
46 CustomerIntEle customerIntEle = new CustomerIntEle();
47 customerIntEle.setIdIndex(i);
48 customerIntEle.setIntArrEle(intArrayEle);
49
50 for (int j = i+1; j < intArr.length; j++) {
51 int intArrayEle2 = intArr[j];
52 CustomerIntEle customerIntEle2 = new CustomerIntEle();
53 customerIntEle2.setIdIndex(j);
54 customerIntEle2.setIntArrEle(intArrayEle2);
55
56 int tempSum=intArrayEle+intArrayEle2;
57 if(tempSum==targetNum){
58 CustomerIntIndex customerIntIndex = new CustomerIntIndex();
59 customerIntIndex.setIdIndex1(i);
60 customerIntIndex.setIdIndex2(j);
61 arrayList.add(customerIntIndex);
62 }
63 }
64
65 }
66
67 return arrayList;
68 }
69 }
70
71 class CustomerIntIndex{
72 private Integer idIndex1;
73 private Integer idIndex2;
74
75 public Integer getIdIndex1() {
76 return idIndex1;
77 }
78 public void setIdIndex1(Integer idIndex1) {
79 this.idIndex1 = idIndex1;
80 }
81 public Integer getIdIndex2() {
82 return idIndex2;
83 }
84 public void setIdIndex2(Integer idIndex2) {
85 this.idIndex2 = idIndex2;
86 }
87 @Override
88 public String toString() {
89 return "["+idIndex1+","+idIndex2+"]";
90 }
91
92
93 }
94
95 class CustomerIntEle{
96 private Integer idIndex;
97 private Integer intArrEle;
98 public int getIdIndex() {
99 return idIndex;
100 }
101 public void setIdIndex(int idIndex) {
102 this.idIndex = idIndex;
103 }
104 public int getIntArrEle() {
105 return intArrEle;
106 }
107 public void setIntArrEle(int intArrEle) {
108 this.intArrEle = intArrEle;
109 }
110
111 }
