Tasks Details
medium
Compute number of inversion in an array.
Task Score
72%
Correctness
100%
Performance
40%
An array A consisting of N integers is given. An inversion is a pair of indexes (P, Q) such that P < Q and A[Q] < A[P].
Write a function:
class Solution { public int solution(int[] A); }
that computes the number of inversions in A, or returns −1 if it exceeds 1,000,000,000.
For example, in the following array:
A[0] = -1 A[1] = 6 A[2] = 3 A[3] = 4 A[4] = 7 A[5] = 4there are four inversions:
(1,2) (1,3) (1,5) (4,5)so the function should return 4.
Write an efficient algorithm for the following assumptions:
- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].
Copyright 2009–2025 by Codility Limited. All Rights Reserved. Unauthorized copying, publication or disclosure prohibited.
Solution
Programming language used Java 8
Time spent on task 27 minutes
Notes
not defined yet
Task timeline
Code: 03:28:04 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
for(int i=0;i<len;i++){
for(int j=i;j<len;j++){
if(A[i]<A[j]) count++;
else i=j;
}
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.317 s
WRONG ANSWER,
got 9 expected 4
Code: 03:28:19 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
for(int i=0;i<len;i++){
for(int j=i;j<len;j++){
if(A[i]>A[j]) count++;
else i=j;
}
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.322 s
WRONG ANSWER,
got 3 expected 4
Code: 03:29:06 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
for(int i=0;i<len;){
for(int j=i;j<len;j++){
if(A[i]>A[j]) count++;
else i=j;
}
}
return count;
}
}
Analysis
expand all
Example tests
1.
5.000 s
TIMEOUT ERROR,
running time: >5.00 sec., time limit: 5.00 sec.
Code: 03:30:01 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
for(int i=0;i<len;){
for(int j=i;j<len;j++){
if(A[i]>A[j]) count++;
else{
i=j-1;
break;
}
}
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.329 s
RUNTIME ERROR,
tested program terminated unexpectedly
stderr:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at Solution.solution(Solution.java:15) at wrapper.run(wrapper.java:40) at wrapper.main(wrapper.java:29)
Code: 03:30:15 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
for(int i=0;i<len;i++){
for(int j=i;j<len;j++){
if(A[i]>A[j]) count++;
else{
i=j-1;
break;
}
}
}
return count;
}
}
Analysis
expand all
Example tests
1.
5.000 s
TIMEOUT ERROR,
running time: >5.00 sec., time limit: 5.00 sec.
Code: 03:30:40 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
for(int i=0;i<len;i++){
for(int j=i;j<len;j++){
if(A[i]>A[j]) count++;
else{
i=j-1;
}
}
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.339 s
RUNTIME ERROR,
tested program terminated unexpectedly
stderr:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1 at Solution.solution(Solution.java:15) at wrapper.run(wrapper.java:40) at wrapper.main(wrapper.java:29)
Code: 03:30:56 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
for(int i=0;i<len;i++){
for(int j=i;j<len;j++){
if(A[i]>A[j]) count++;
else{
i=j;
}
}
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.323 s
WRONG ANSWER,
got 3 expected 4
Code: 03:31:55 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
while(i<len){
for(int j=i;j<len;j++){
if(A[i]>A[j]) count++;
else{
i=j;
}
}
i++;
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.318 s
WRONG ANSWER,
got 3 expected 4
Code: 03:34:26 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
//for(int j=i;j<len;j++){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
j++;
}
else{
i=j;
break;
}
}
//}
i++;
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.319 s
WRONG ANSWER,
got 0 expected 4
Code: 03:34:58 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
//for(int j=i;j<len;j++){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
j++;
}
else{
i=j;
}
}
//}
i++;
}
return count;
}
}
Analysis
expand all
Example tests
1.
5.000 s
TIMEOUT ERROR,
running time: >5.00 sec., time limit: 5.00 sec.
Code: 03:35:42 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
//for(int j=i;j<len;j++){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
j++;
}
else{
i=j;
j=len;
}
}
//if(j!=len)
i++;
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.323 s
WRONG ANSWER,
got 0 expected 4
Code: 03:36:01 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
//for(int j=i;j<len;j++){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
//j++;
}
else{
i=j;
}
j++;
}
//if(j!=len)
i++;
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.338 s
WRONG ANSWER,
got 3 expected 4
Code: 03:36:43 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
//for(int j=i;j<len;j++){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
System.out.println("("+A[i]+","+A[j]+")");
//j++;
}
else{
i=j;
}
j++;
}
//if(j!=len)
i++;
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.336 s
WRONG ANSWER,
got 3 expected 4
stdout:
(6,3) (6,4) (7,4)
Code: 03:37:32 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
//for(int j=i;j<len;j++){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
System.out.println("("+A[i]+","+A[j]+")");
//j++;
}
j++;
}
//if(j!=len)
i++;
}
return count;
}
}
Analysis
Code: 03:37:48 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
//for(int j=i;j<len;j++){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
System.out.println("("+A[i]+","+A[j]+")");
//j++;
}else break;
j++;
}
//if(j!=len)
i++;
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.339 s
WRONG ANSWER,
got 0 expected 4
Code: 03:38:36 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
//for(int j=i;j<len;j++){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
System.out.println("("+A[i]+","+A[j]+")");
//j++;
}else j=len;
j++;
}
//if(j!=len)
i++;
}
return count;
}
}
Analysis
expand all
Example tests
1.
1.353 s
WRONG ANSWER,
got 0 expected 4
Code: 03:38:46 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
//for(int j=i;j<len;j++){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
System.out.println("("+A[i]+","+A[j]+")");
//j++;
}
j++;
}
//if(j!=len)
i++;
}
return count;
}
}
Analysis
Code: 03:40:08 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
int k=0;
while(i<len){
k=0;
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
System.out.println("("+A[i]+","+A[j]+")");
}else{ k=i; }
j++;
}
if(k!=0) i=k;
else i++;
}
return count;
}
}
Analysis
expand all
Example tests
1.
5.000 s
TIMEOUT ERROR,
running time: >5.00 sec., time limit: 5.00 sec.
stdout:
(6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6,4) (6,3) (6,4) (6
Code: 03:42:24 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
int k=0;
while(i<len){
k=0;
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
System.out.println("("+A[i]+","+A[j]+")");
}else{ k=j; }
j++;
}
if(k!=0) i=k;
else i++;
}
return count;
}
}
Analysis
expand all
Example tests
1.
5.000 s
TIMEOUT ERROR,
running time: >5.00 sec., time limit: 5.00 sec.
Code: 03:42:57 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
int k=0;
while(i<len){
k=0;
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
System.out.println("("+A[i]+","+A[j]+")");
}//else{ k=j; }
j++;
}
if(k!=0) i=k;
else i++;
}
return count;
}
}
Analysis
Code: 03:44:19 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
int k=0;
while(i<len){
k=0;
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
}
j++;
}
if(k!=0) i=k;
else i++;
}
if(count>1000000000) count=-1;
return count;
}
}
Analysis
Code: 03:45:20 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
int k=0;
while(i<len){
k=0;
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
}
j++;
}
i++;
}
if(count>1000000000) count=-1;
return count;
}
}
Analysis
Code: 03:45:47 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
}
j++;
}
i++;
}
if(count>1000000000) count=-1;
return count;
}
}
Analysis
Code: 03:46:10 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
}
j++;
}
i++;
}
if(count>1000000000) count=-1;
return count;
}
}
User test case 1:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
Analysis
Code: 03:46:33 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
j=i;
while(j<len){
if(A[i]>A[j]){
count++;
}
j++;
}
i++;
}
if(count>1000000000) count=-1;
return count;
}
}
User test case 1:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
User test case 2:
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
Analysis
Code: 03:47:09 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
j=i+1;
while(j<len){
if(A[i]>A[j]){
count++;
}
j++;
}
i++;
}
if(count>1000000000) count=-1;
return count;
}
}
User test case 1:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
User test case 2:
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
Analysis
Code: 03:48:10 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
int k=0;
while(i<len){
j=i+1;
while(j<len){
if(A[i]>A[j]){
count++;
}else{k=j;}
j++;
}
if(k!=0) i=k;
else i++;
}
if(count>1000000000) count=-1;
return count;
}
}
User test case 1:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
User test case 2:
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
Analysis
expand all
Example tests
1.
5.000 s
TIMEOUT ERROR,
running time: >5.00 sec., time limit: 5.00 sec.
expand all
User tests
1.
5.000 s
TIMEOUT ERROR,
running time: >5.00 sec., time limit: 5.00 sec.
1.
1.246 s
OK
function result: 45
function result: 45
Code: 03:48:59 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
int k=0;
while(i<len){
k=0;
j=i+1;
while(j<len){
if(A[i]>A[j]){
count++;
}else{k=j;}
j++;
}
if(k!=0) i=k;
else i++;
}
if(count>1000000000) count=-1;
return count;
}
}
User test case 1:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
User test case 2:
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
Analysis
expand all
Example tests
1.
1.345 s
WRONG ANSWER,
got 0 expected 4
Code: 03:50:24 UTC,
java,
verify,
result: Failed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
k=0;
j=i+1;
while(j<len){
if(A[i]>A[j]){
count++;
}
j++;
}
i++;
}
if(count>1000000000) count=-1;
return count;
}
}
Analysis
Compile error
Solution.java:16: error: cannot find symbol
k=0;
^
symbol: variable k
location: class Solution
1 error
Code: 03:50:35 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
j=i+1;
while(j<len){
if(A[i]>A[j]){
count++;
}
j++;
}
i++;
}
if(count>1000000000) count=-1;
return count;
}
}
User test case 1:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
User test case 2:
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
Analysis
Code: 03:50:46 UTC,
java,
verify,
result: Passed
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
j=i+1;
while(j<len){
if(A[i]>A[j]){
count++;
}
j++;
}
i++;
}
if(count>1000000000) count=-1;
return count;
}
}
User test case 1:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
User test case 2:
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
Analysis
Code: 03:50:54 UTC,
java,
final,
score:
72
// you can also use imports, for example:
// import java.util.*;
// you can write to stdout for debugging purposes, e.g.
// System.out.println("this is a debug message");
import java.math.BigDecimal;
class Solution {
public int solution(int[] A) {
// write your code in Java SE 8
int len=A.length;
int count=0;
int i=0;
int j=0;
while(i<len){
j=i+1;
while(j<len){
if(A[i]>A[j]){
count++;
}
j++;
}
i++;
}
if(count>1000000000) count=-1;
return count;
}
}Analysis summary
The following issues have been detected: timeout errors.
Analysis
Detected time complexity:
O(N**2)
expand all
Correctness tests
1.
1.330 s
OK
1.
1.336 s
OK
1.
1.335 s
OK
1.
1.345 s
OK
2.
1.329 s
OK
3.
1.325 s
OK
4.
1.335 s
OK
1.
1.332 s
OK
1.
1.324 s
OK
expand all
Performance tests
1.
1.335 s
OK
1.
2.293 s
OK
1.
5.179 s
TIMEOUT ERROR,
running time: 5.18 sec., time limit: 2.71 sec.
1.
8.000 s
TIMEOUT ERROR,
running time: >8.00 sec., time limit: 2.85 sec.
big_monotonic
long descending and non-ascending sequence
long descending and non-ascending sequence
✘
TIMEOUT ERROR
running time: >8.00 sec., time limit: 2.97 sec.
running time: >8.00 sec., time limit: 2.97 sec.
1.
8.000 s
TIMEOUT ERROR,
running time: >8.00 sec., time limit: 2.97 sec.
2.
9.000 s
TIMEOUT ERROR,
running time: >9.00 sec., time limit: 3.05 sec.
3.
9.000 s
TIMEOUT ERROR,
running time: >9.00 sec., time limit: 3.04 sec.