Java String Array Get Max
-1
I have a 2D String array and I'd like to print and get the maximum value of the second row. I've searched for methods to get the maximum value of each row but it's not working.
Here's what I have so far:
String stringArray = new String[6][1];
for (int i = 0; i < stringArray.length; i++){
double max = Integer.MIN_VALUE;
System.out.println();
for (int j = 0; j < stringArray[i].length; j++){
System.out.print("Value " + (i + 1) + "t");
stringArray[1][j] = String.valueOf(Math.random());
System.out.print(stringArray[1][j] + "t");
if (Integer.parseInt(stringArray[1][j]) > max){
max = Double.parseDouble(stringArray[1][j]);
}
}
System.out.println(); // to print in matrix format
System.out.println("n Max value is " + max);
}
I tried to change the i's and j's and got nothing. The result is so weird (and wrong), probably because it's together with the print matrix format.
Suggestions?
java arrays max
asked Nov 28 '18 at 17:57
MarceloMarcelo
291
add a comment |
-1
I have a 2D String array and I'd like to print and get the maximum value of the second row. I've searched for methods to get the maximum value of each row but it's not working.
Here's what I have so far:
String stringArray = new String[6][1];
for (int i = 0; i < stringArray.length; i++){
double max = Integer.MIN_VALUE;
System.out.println();
for (int j = 0; j < stringArray[i].length; j++){
System.out.print("Value " + (i + 1) + "t");
stringArray[1][j] = String.valueOf(Math.random());
System.out.print(stringArray[1][j] + "t");
if (Integer.parseInt(stringArray[1][j]) > max){
max = Double.parseDouble(stringArray[1][j]);
}
}
System.out.println(); // to print in matrix format
System.out.println("n Max value is " + max);
}
I tried to change the i's and j's and got nothing. The result is so weird (and wrong), probably because it's together with the print matrix format.
Suggestions?
java arrays max
asked Nov 28 '18 at 17:57
MarceloMarcelo
291
1
new String[6][1]- technically it is a 1D array.
– user7
Nov 28 '18 at 18:00
Have you tried using.length?
– Frontear
Nov 28 '18 at 18:01
Why stringArray[1][j]? Change it tostringArray[i][j]
– forpas
Nov 28 '18 at 18:01
2
Integer.parseIntwill not work here asMath.random()returns a double. What is your intention here?
– user7
Nov 28 '18 at 18:01
As per this statementString stringArray = new String[6][1];you will have 6 rows with 1 column -- What do you mean by get the maximum value of the second row when there is just 1 element in each row?
– Nicholas K
Nov 28 '18 at 18:15
add a comment |
-1
-1
-1
I have a 2D String array and I'd like to print and get the maximum value of the second row. I've searched for methods to get the maximum value of each row but it's not working.
Here's what I have so far:
String stringArray = new String[6][1];
for (int i = 0; i < stringArray.length; i++){
double max = Integer.MIN_VALUE;
System.out.println();
for (int j = 0; j < stringArray[i].length; j++){
System.out.print("Value " + (i + 1) + "t");
stringArray[1][j] = String.valueOf(Math.random());
System.out.print(stringArray[1][j] + "t");
if (Integer.parseInt(stringArray[1][j]) > max){
max = Double.parseDouble(stringArray[1][j]);
}
}
System.out.println(); // to print in matrix format
System.out.println("n Max value is " + max);
}
I tried to change the i's and j's and got nothing. The result is so weird (and wrong), probably because it's together with the print matrix format.
Suggestions?
java arrays max
asked Nov 28 '18 at 17:57
MarceloMarcelo
291
I have a 2D String array and I'd like to print and get the maximum value of the second row. I've searched for methods to get the maximum value of each row but it's not working.
Here's what I have so far:
String stringArray = new String[6][1];
for (int i = 0; i < stringArray.length; i++){
double max = Integer.MIN_VALUE;
System.out.println();
for (int j = 0; j < stringArray[i].length; j++){
System.out.print("Value " + (i + 1) + "t");
stringArray[1][j] = String.valueOf(Math.random());
System.out.print(stringArray[1][j] + "t");
if (Integer.parseInt(stringArray[1][j]) > max){
max = Double.parseDouble(stringArray[1][j]);
}
}
System.out.println(); // to print in matrix format
System.out.println("n Max value is " + max);
}
I tried to change the i's and j's and got nothing. The result is so weird (and wrong), probably because it's together with the print matrix format.
Suggestions?
java arrays max
java arrays max
asked Nov 28 '18 at 17:57
MarceloMarcelo
291
asked Nov 28 '18 at 17:57
MarceloMarcelo
291
asked Nov 28 '18 at 17:57
MarceloMarcelo
291
asked Nov 28 '18 at 17:57
MarceloMarcelo
291
asked Nov 28 '18 at 17:57
MarceloMarcelo
291
291
1
new String[6][1]- technically it is a 1D array.
– user7
Nov 28 '18 at 18:00
Have you tried using.length?
– Frontear
Nov 28 '18 at 18:01
Why stringArray[1][j]? Change it tostringArray[i][j]
– forpas
Nov 28 '18 at 18:01
2
Integer.parseIntwill not work here asMath.random()returns a double. What is your intention here?
– user7
Nov 28 '18 at 18:01
As per this statementString stringArray = new String[6][1];you will have 6 rows with 1 column -- What do you mean by get the maximum value of the second row when there is just 1 element in each row?
– Nicholas K
Nov 28 '18 at 18:15
add a comment |
1
new String[6][1]- technically it is a 1D array.
– user7
Nov 28 '18 at 18:00
Have you tried using.length?
– Frontear
Nov 28 '18 at 18:01
Why stringArray[1][j]? Change it tostringArray[i][j]
– forpas
Nov 28 '18 at 18:01
2
Integer.parseIntwill not work here asMath.random()returns a double. What is your intention here?
– user7
Nov 28 '18 at 18:01
As per this statementString stringArray = new String[6][1];you will have 6 rows with 1 column -- What do you mean by get the maximum value of the second row when there is just 1 element in each row?
– Nicholas K
Nov 28 '18 at 18:15
1
1
new String[6][1] - technically it is a 1D array.– user7
Nov 28 '18 at 18:00
new String[6][1] - technically it is a 1D array.– user7
Nov 28 '18 at 18:00
Have you tried using
.length?– Frontear
Nov 28 '18 at 18:01
Have you tried using
.length?– Frontear
Nov 28 '18 at 18:01
Why stringArray[1][j]? Change it to
stringArray[i][j]– forpas
Nov 28 '18 at 18:01
Why stringArray[1][j]? Change it to
stringArray[i][j]– forpas
Nov 28 '18 at 18:01
2
2
Integer.parseInt will not work here as Math.random() returns a double. What is your intention here?– user7
Nov 28 '18 at 18:01
Integer.parseInt will not work here as Math.random() returns a double. What is your intention here?– user7
Nov 28 '18 at 18:01
As per this statement
String stringArray = new String[6][1]; you will have 6 rows with 1 column -- What do you mean by get the maximum value of the second row when there is just 1 element in each row?– Nicholas K
Nov 28 '18 at 18:15
As per this statement
String stringArray = new String[6][1]; you will have 6 rows with 1 column -- What do you mean by get the maximum value of the second row when there is just 1 element in each row?– Nicholas K
Nov 28 '18 at 18:15
add a comment |
1 Answer
1
active
oldest
votes
0
To find max value in a second dimention you must compare [i][j], not [1][j]
for (int i = 0; i < stringArray.length; i++) {
int max = Integer.MIN_VALUE;
for (int j = 0; j < stringArray[i].length; j++) {
int d = Integer.parseInt(stringArray[i][j]);
if (d > max) {
max = d;
}
}
System.out.println("Max row " + i + " value is " + max);
}
Do note that this will print MIN_VALUE for empty array. For
String stringArray = {{"1", "2", "4"}, {"0", "3", "-1"}};
you will get:
Max row 0 value is 4
Max row 1 value is 3
answered Nov 28 '18 at 18:06
Karol DowbeckiKarol Dowbecki
25.5k93759
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
To find max value in a second dimention you must compare [i][j], not [1][j]
for (int i = 0; i < stringArray.length; i++) {
int max = Integer.MIN_VALUE;
for (int j = 0; j < stringArray[i].length; j++) {
int d = Integer.parseInt(stringArray[i][j]);
if (d > max) {
max = d;
}
}
System.out.println("Max row " + i + " value is " + max);
}
Do note that this will print MIN_VALUE for empty array. For
String stringArray = {{"1", "2", "4"}, {"0", "3", "-1"}};
you will get:
Max row 0 value is 4
Max row 1 value is 3
answered Nov 28 '18 at 18:06
Karol DowbeckiKarol Dowbecki
25.5k93759
add a comment |
0
To find max value in a second dimention you must compare [i][j], not [1][j]
for (int i = 0; i < stringArray.length; i++) {
int max = Integer.MIN_VALUE;
for (int j = 0; j < stringArray[i].length; j++) {
int d = Integer.parseInt(stringArray[i][j]);
if (d > max) {
max = d;
}
}
System.out.println("Max row " + i + " value is " + max);
}
Do note that this will print MIN_VALUE for empty array. For
String stringArray = {{"1", "2", "4"}, {"0", "3", "-1"}};
you will get:
Max row 0 value is 4
Max row 1 value is 3
answered Nov 28 '18 at 18:06
Karol DowbeckiKarol Dowbecki
25.5k93759
add a comment |
0
0
0
To find max value in a second dimention you must compare [i][j], not [1][j]
for (int i = 0; i < stringArray.length; i++) {
int max = Integer.MIN_VALUE;
for (int j = 0; j < stringArray[i].length; j++) {
int d = Integer.parseInt(stringArray[i][j]);
if (d > max) {
max = d;
}
}
System.out.println("Max row " + i + " value is " + max);
}
Do note that this will print MIN_VALUE for empty array. For
String stringArray = {{"1", "2", "4"}, {"0", "3", "-1"}};
you will get:
Max row 0 value is 4
Max row 1 value is 3
answered Nov 28 '18 at 18:06
Karol DowbeckiKarol Dowbecki
25.5k93759
To find max value in a second dimention you must compare [i][j], not [1][j]
for (int i = 0; i < stringArray.length; i++) {
int max = Integer.MIN_VALUE;
for (int j = 0; j < stringArray[i].length; j++) {
int d = Integer.parseInt(stringArray[i][j]);
if (d > max) {
max = d;
}
}
System.out.println("Max row " + i + " value is " + max);
}
Do note that this will print MIN_VALUE for empty array. For
String stringArray = {{"1", "2", "4"}, {"0", "3", "-1"}};
you will get:
Max row 0 value is 4
Max row 1 value is 3
answered Nov 28 '18 at 18:06
Karol DowbeckiKarol Dowbecki
25.5k93759
answered Nov 28 '18 at 18:06
Karol DowbeckiKarol Dowbecki
25.5k93759
answered Nov 28 '18 at 18:06
Karol DowbeckiKarol Dowbecki
25.5k93759
answered Nov 28 '18 at 18:06
Karol DowbeckiKarol Dowbecki
25.5k93759
25.5k93759
add a comment |
add a comment |
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1
new String[6][1]- technically it is a 1D array.– user7
Nov 28 '18 at 18:00
Have you tried using
.length?– Frontear
Nov 28 '18 at 18:01
Why stringArray[1][j]? Change it to
stringArray[i][j]– forpas
Nov 28 '18 at 18:01
2
Integer.parseIntwill not work here asMath.random()returns a double. What is your intention here?– user7
Nov 28 '18 at 18:01
As per this statement
String stringArray = new String[6][1];you will have 6 rows with 1 column -- What do you mean by get the maximum value of the second row when there is just 1 element in each row?– Nicholas K
Nov 28 '18 at 18:15