por favor me ajudem a encontrar o porque do erro:
[code] String[] line=new String[21];
line[0]= “73167176531330624919225119674426574742355349194934”;
line[1]= “96983520312774506326239578318016984801869478851843”;
line[2]= “85861560789112949495459501737958331952853208805511”;
line[3]= “12540698747158523863050715693290963295227443043557”;
line[4]= “66896648950445244523161731856403098711121722383113”;
line[5]= “62229893423380308135336276614282806444486645238749”;
line[6]= “30358907296290491560440772390713810515859307960866”;
line[7]= “70172427121883998797908792274921901699720888093776”;
line[8]= “65727333001053367881220235421809751254540594752243”;
line[9]=“52584907711670556013604839586446706324415722155397”;
line[10]=“53697817977846174064955149290862569321978468622482”;
line[11]=“83972241375657056057490261407972968652414535100474”;
line[12]=“82166370484403199890008895243450658541227588666881”;
line[13]=“16427171479924442928230863465674813919123162824586”;
line[14]=“17866458359124566529476545682848912883142607690042”;
line[15]=“24219022671055626321111109370544217506941658960408”;
line[16]=“07198403850962455444362981230987879927244284909188”;
line[17]=“84580156166097919133875499200524063689912560717606”;
line[18]=“05886116467109405077541002256983155200055935729725”;
line[19]=“71636269561882670428252483600823257530420752963450”;
int z=0,x=0,y=0,pot;
long largestLine=0,potG=0;
int[]a=new int[50];
while (x+5<=50){//line[y].length()=50 em todas as y linhas
for(int i=x;i<5+x;i++){
String val=String.valueOf(line[y].charAt(i));
//System.out.println(val);
//if (i==5)break;
a[i]=Integer.parseInt(val);
System.out.println(y+" a["+i+"]= "+a[i]);
}
pot=(a[0+x] * a[1+x] * a[2+x] * a[3+x] * a[4+x]);
if (pot>potG)potG=pot;
x+=5;
System.out.println("----------------\n"+pot+"\n==================");
if (x==50){
y++;
x=0;
potG=0;
//break;
}
if (largestLine<potG)largestLine=potG;
System.out.println("sumLine="+largestLine+" pot="+pot);
}
System.out.println(potG);
}[/code]
Saída:
[size=9]init:
deps-jar:
Compiling 1 source file to C:\Users\Administrador\Documents\NetBeansProjects\GujForunsTest\build\classes
compile-single:
run-single:
0 a[0]= 7
0 a[1]= 3
0 a[2]= 1
0 a[3]= 6
0 a[4]= 7
882
sumLine=882 pot=882
0 a[5]= 1
0 a[6]= 7
0 a[7]= 6
0 a[8]= 5
0 a[9]= 3
630
sumLine=882 pot=630
0 a[10]= 1
0 a[11]= 3
0 a[12]= 3
0 a[13]= 0
0 a[14]= 6
0
sumLine=882 pot=0
0 a[15]= 2
0 a[16]= 4
0 a[17]= 9
0 a[18]= 1
0 a[19]= 9
648
sumLine=882 pot=648
0 a[20]= 2
0 a[21]= 2
0 a[22]= 5
0 a[23]= 1
0 a[24]= 1
20
sumLine=882 pot=20
0 a[25]= 9
0 a[26]= 6
0 a[27]= 7
0 a[28]= 4
0 a[29]= 4
6048[/size]
[size=18]…[/size]
[size=9]
sumLine=31752 pot=1260
19 a[0]= 7
19 a[1]= 1
19 a[2]= 6
19 a[3]= 3
19 a[4]= 6
756
sumLine=31752 pot=756
19 a[5]= 2
19 a[6]= 6
19 a[7]= 9
19 a[8]= 5
19 a[9]= 6
3240
sumLine=31752 pot=3240
19 a[10]= 1
19 a[11]= 8
19 a[12]= 8
19 a[13]= 2
19 a[14]= 6
768
sumLine=31752 pot=768
19 a[15]= 7
19 a[16]= 0
19 a[17]= 4
19 a[18]= 2
19 a[19]= 8
0
sumLine=31752 pot=0
19 a[20]= 2
19 a[21]= 5
19 a[22]= 2
19 a[23]= 4
19 a[24]= 8
640
[color=red]Exception in thread “main” java.lang.NullPointerException
at ProblemasEulerProject.p8.main(p8.java:33)[/color]sumLine=31752 pot=640
19 a[25]= 3
19 a[26]= 6
19 a[27]= 0
19 a[28]= 0
19 a[29]= 8
0
sumLine=31752 pot=0
19 a[30]= 2
19 a[31]= 3
19 a[32]= 2
19 a[33]= 5
19 a[34]= 7
420
sumLine=31752 pot=420
19 a[35]= 5
19 a[36]= 3
19 a[37]= 0
19 a[38]= 4
19 a[39]= 2
0
sumLine=31752 pot=0
19 a[40]= 0
19 a[41]= 7
19 a[42]= 5
19 a[43]= 2
19 a[44]= 9
0
sumLine=31752 pot=0
19 a[45]= 6
19 a[46]= 3
19 a[47]= 4
19 a[48]= 5
19 a[49]= 0
0
sumLine=31752 pot=0
Java Result: 1
CONSTRUÍDO COM SUCESSO (tempo total: 1 segundo)[/size]
Ajuda-em qual o erro?