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Description
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Write a program <code>Summer</code> whose API contains
two overloaded (same-name) public static methods
<ul>
<li>
<code>sum(double[] a)</code>,
which returns the sum of the elements of <code>a</code>
</li>
<li>
<code>sum(int[] a)</code>,
which returns the sum of the elements of <code>a</code>
</li>
</ul>

Epilogue
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shown when solved

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Remarks
Comments, history, license, etc.

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Engine
Choices
json list of string, bool pairs
e.g. [["good", true], ["bad", false]]

Correct answer
Template / Reference solution

\[
public static double sum(double[] a) {
double result = 0;
for (int i=0; i < a.length; i++)
result += a[i];
return result;
}

public static int sum(int[] a) {
int result = 0;
for (int i=0; i < a.length; i++)
result += a[i];
return result;
}
]\
// basic tests
public static void main(String[] args) {
StdOut.println(sum(new int[]{1, 2, 6}));
StdOut.println(sum(new double[]{Math.PI, Math.E, Math.log(2)}));
}

Template / Reference solution

Java test suite
See manual

testMain();
test("sum", (Object)new int[]{-5, -4, -3, -2, -1});
test("sum", (Object)new double[]{1E10, 1E11, 1E12});

C++ test suite
json list of stdin/args tests
e.g. [{"stdin":"hi", "args":["4", "5"]}, {"stdin":"noargs"}]
to just run once with no input use [{}]

C++ test suite
See manual

Forbidden substrings
json list of strings
e.g. ["for","while"]

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Solution visibility remove
Java imports
json list of importables
e.g. ["java.util.*"]

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Override Java classname
else defaults to
websheet name
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Dependent on other websheets?
json list of websheet names in this folder
e.g. ["DataStructure"]

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Is example?
i.e., just a demo
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Add compiler flag(s)
json list of flags
e.g. ["-Wno-unused-variable"]

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Remove default compiler flag(s)
json list of flags
see default_cppflags
e.g. ["-Wno-write-strings"]

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Property	Value
Description html markup shown to student	Write a program <code>Summer</code> whose API contains two overloaded (same-name) public static methods <ul> <li> <code>sum(double[] a)</code>, which returns the sum of the elements of <code>a</code> </li> <li> <code>sum(int[] a)</code>, which returns the sum of the elements of <code>a</code> </li> </ul>
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	remove
Engine
Choices json list of string, bool pairs e.g. `[["good", true], ["bad", false]]`
Correct answer
Template / Reference solution	\[ public static double sum(double[] a) { double result = 0; for (int i=0; i < a.length; i++) result += a[i]; return result; } public static int sum(int[] a) { int result = 0; for (int i=0; i < a.length; i++) result += a[i]; return result; } ]\ // basic tests public static void main(String[] args) { StdOut.println(sum(new int[]{1, 2, 6})); StdOut.println(sum(new double[]{Math.PI, Math.E, Math.log(2)})); }
Template / Reference solution
Java test suite See manual	testMain(); test("sum", (Object)new int[]{-5, -4, -3, -2, -1}); test("sum", (Object)new double[]{1E10, 1E11, 1E12});
C++ test suite json list of stdin/args tests e.g. `[{"stdin":"hi", "args":["4", "5"]}, {"stdin":"noargs"}]` to just run once with no input use `[{}]`
C++ test suite See manual
Forbidden substrings json list of strings e.g. `["for","while"]`	remove
Solution visibility	remove
Java imports json list of importables e.g. `["java.util.*"]`	remove
Override Java classname else defaults to websheet name	remove
Dependent on other websheets? json list of websheet names in this folder e.g. `["DataStructure"]`	remove
Is example? i.e., just a demo	remove
Add compiler flag(s) json list of flags e.g. `["-Wno-unused-variable"]`	remove
Remove default compiler flag(s) json list of flags see default_cppflags e.g. `["-Wno-write-strings"]`	remove

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Note: problems are open-source by default (see 'Public permissions'). Assumed license for open problems is Creative Commons 4.0 Attribution-ShareAlike unless specified in 'Remarks'.