java - How to separate negative numbers and positive numbers from an array? -

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i want separate negative numbers , positive numbers in array.

for example, if array has 10 values , {-8,7,3,-1,0,2,-2,4,-6,7}, want new modified array {-6,-2,-1,-8,7,3,0,2,4,7}.

i want in o(n^2) , have written code well. not getting right outputs. code wrong?

import java.util.random; public class apples {      public static void main(string[] args) {         random randominteger=new random();         int[] a=new int[100];         for(int i=0;i<a.length;i++)         {             a[i]=randominteger.nextint((int)system.currenttimemillis())%20 - 10;         }         for(int i=0;i<a.length;i++)         {             if(a[i]<0)             {                 int temp=a[i];                 for(int j=i;j>0;j--)                 {                     a[j]=a[j-1];                     j--;                 }                 a[0]=temp;             }         }         for(int i=0;i<a.length;i++)         {             system.out.print(a[i]+" ");         }      } }

you have 2 j-- while need one, remove either 1 of them.

for(int j=i;j>0;j--)  {      a[j]=a[j-1];      // remove j--; here  }

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