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feat(jq): difference of squares

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Signed-off-by: Christina Sørensen <christina@cafkafk.com>
This commit is contained in:
Christina Sørensen 2024-12-18 15:19:16 +01:00
parent 38d024e7b6
commit e90bc0845c
Signed by: cafkafk
GPG key ID: 26C542FD97F965CE
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19
jq/difference-of-squares/.exercism/config.json Normal file
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{
"authors": [
"glennj"
],
"files": {
"solution": [
"difference-of-squares.jq"
],
"test": [
"test-difference-of-squares.bats"
],
"example": [
".meta/example.jq"
]
},
"blurb": "Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.",
"source": "Problem 6 at Project Euler",
"source_url": "https://projecteuler.net/problem=6"
}

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jq/difference-of-squares/.exercism/metadata.json Normal file
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{"track":"jq","exercise":"difference-of-squares","id":"b0515f053d9d47328a0655cb28b37a6e","url":"https://exercism.org/tracks/jq/exercises/difference-of-squares","handle":"cafkafk","is_requester":true,"auto_approve":false}

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jq/difference-of-squares/HELP.md Normal file
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# Help
## Running the tests
Each exercise contains a test file.
Run the tests using the `bats` program.
```bash
bats test-hello-world.bats
```
`bats` will need to be installed.
See the [Testing on the Bash track][bash] page for instructions to install `bats` for your system.
### bats is implemented in bash
The bats file is a bash script, with some special functions recognized by the `bats` command.
You'll see some tests that look like
```sh
jq -f some-exercise.jq <<< "{some,json,here}"
```
That `<<<` syntax is a bash [Here String][here-string].
It sends the string on the right-hand side into the standard input of the program on the left-hand side.
It is ([approximately][so]) the same as
```sh
echo "{some,json,here}" | jq -f some-exercise.jq
```
## Help for assert functions
The tests use functions from the [bats-assert][bats-assert] library.
Help for the various `assert*` functions can be found there.
## Skipped tests
Solving an exercise means making all its tests pass.
By default, only one test (the first one) is executed when you run the tests.
This is intentional, as it allows you to focus on just making that one test pass.
Once it passes, you can enable the next test by commenting out or removing the
[[ $BATS_RUN_SKIPPED == true ]] || skip
annotations prepending other tests.
## Overriding skips
To run all tests, including the ones with `skip` annotations, you can run:
```bash
BATS_RUN_SKIPPED=true bats test-some-exercise.bats
```
It can be convenient to use a wrapper function to save on typing: in `bash` you can do:
```bash
bats() {
BATS_RUN_SKIPPED=true command bats *.bats
}
```
Then run tests with just:
```bash
bats
```
## Debugging in `jq`
`jq` comes with a handy [`debug`][debug] filter.
Use it while you are developing your exercise solutions to inspect the data that is currently in the jq pipline.
See the [debugging doc][debugging] for more details.
[bash]: https://exercism.org/docs/tracks/bash/tests
[bats-assert]: https://github.com/bats-core/bats-assert
[here-string]: https://www.gnu.org/software/bash/manual/bash.html#Here-Strings
[so]: https://unix.stackexchange.com/a/80372/4667
[debug]: https://jqlang.github.io/jq/manual/v1.7/#debug
[debugging]: https://exercism.org/docs/tracks/jq/debugging
## Submitting your solution
You can submit your solution using the `exercism submit difference-of-squares.jq` command.
This command will upload your solution to the Exercism website and print the solution page's URL.
It's possible to submit an incomplete solution which allows you to:
- See how others have completed the exercise
- Request help from a mentor
## Need to get help?
If you'd like help solving the exercise, check the following pages:
- The [jq track's documentation](https://exercism.org/docs/tracks/jq)
- The [jq track's programming category on the forum](https://forum.exercism.org/c/programming/jq)
- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
## Need more help?
- Go to the [Exercism Community forum](https://forum.exercism.org) to get support and ask questions (or just chat!)
- Use the [Exercism Support](https://forum.exercism.org/c/support/8) category if you face any issues with working in the web editor, or downloading or submitting your exercises locally.
- Use the [Programming:jq](https://forum.exercism.org/c/programming/jq/133) category for jq-specific topics.
- Join the community on [Exercism's Discord server](https://exercism.org/r/discord).
- [StackOverflow](https://stackoverflow.com/questions/tagged/jq) can be used to search for your problem and see if it has been answered already.
You can also ask and answer questions.
- [Github issue tracker](https://github.com/exercism/jq/issues) is where we track our development and maintainance of `jq` exercises in exercism.
If none of the above links help you, feel free to post an issue here.

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jq/difference-of-squares/README.md Normal file
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# Difference Of Squares
Welcome to Difference Of Squares on Exercism's jq Track.
If you need help running the tests or submitting your code, check out `HELP.md`.
## Instructions
Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.
The square of the sum of the first ten natural numbers is
(1 + 2 + ... + 10)² = 55² = 3025.
The sum of the squares of the first ten natural numbers is
1² + 2² + ... + 10² = 385.
Hence the difference between the square of the sum of the first ten natural numbers and the sum of the squares of the first ten natural numbers is 3025 - 385 = 2640.
You are not expected to discover an efficient solution to this yourself from first principles; research is allowed, indeed, encouraged.
Finding the best algorithm for the problem is a key skill in software engineering.
## Source
### Created by
- @glennj
### Based on
Problem 6 at Project Euler - https://projecteuler.net/problem=6

637
jq/difference-of-squares/bats-extra.bash Normal file
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# This is the source code for bats-support and bats-assert, concatenated
# * https://github.com/bats-core/bats-support
# * https://github.com/bats-core/bats-assert
#
# Comments have been removed to save space. See the git repos for full source code.
############################################################
#
# bats-support - Supporting library for Bats test helpers
#
# Written in 2016 by Zoltan Tombol <zoltan dot tombol at gmail dot com>
#
# To the extent possible under law, the author(s) have dedicated all
# copyright and related and neighboring rights to this software to the
# public domain worldwide. This software is distributed without any
# warranty.
#
# You should have received a copy of the CC0 Public Domain Dedication
# along with this software. If not, see
# <http://creativecommons.org/publicdomain/zero/1.0/>.
#
fail() {
(( $# == 0 )) && batslib_err || batslib_err "$@"
return 1
}
batslib_is_caller() {
local -i is_mode_direct=1
# Handle options.
while (( $# > 0 )); do
case "$1" in
-i|--indirect) is_mode_direct=0; shift ;;
--) shift; break ;;
*) break ;;
esac
done
# Arguments.
local -r func="$1"
# Check call stack.
if (( is_mode_direct )); then
[[ $func == "${FUNCNAME[2]}" ]] && return 0
else
local -i depth
for (( depth=2; depth<${#FUNCNAME[@]}; ++depth )); do
[[ $func == "${FUNCNAME[$depth]}" ]] && return 0
done
fi
return 1
}
batslib_err() {
{ if (( $# > 0 )); then
echo "$@"
else
cat -
fi
} >&2
}
batslib_count_lines() {
local -i n_lines=0
local line
while IFS='' read -r line || [[ -n $line ]]; do
(( ++n_lines ))
done < <(printf '%s' "$1")
echo "$n_lines"
}
batslib_is_single_line() {
for string in "$@"; do
(( $(batslib_count_lines "$string") > 1 )) && return 1
done
return 0
}
batslib_get_max_single_line_key_width() {
local -i max_len=-1
while (( $# != 0 )); do
local -i key_len="${#1}"
batslib_is_single_line "$2" && (( key_len > max_len )) && max_len="$key_len"
shift 2
done
echo "$max_len"
}
batslib_print_kv_single() {
local -ir col_width="$1"; shift
while (( $# != 0 )); do
printf '%-*s : %s\n' "$col_width" "$1" "$2"
shift 2
done
}
batslib_print_kv_multi() {
while (( $# != 0 )); do
printf '%s (%d lines):\n' "$1" "$( batslib_count_lines "$2" )"
printf '%s\n' "$2"
shift 2
done
}
batslib_print_kv_single_or_multi() {
local -ir width="$1"; shift
local -a pairs=( "$@" )
local -a values=()
local -i i
for (( i=1; i < ${#pairs[@]}; i+=2 )); do
values+=( "${pairs[$i]}" )
done
if batslib_is_single_line "${values[@]}"; then
batslib_print_kv_single "$width" "${pairs[@]}"
else
local -i i
for (( i=1; i < ${#pairs[@]}; i+=2 )); do
pairs[$i]="$( batslib_prefix < <(printf '%s' "${pairs[$i]}") )"
done
batslib_print_kv_multi "${pairs[@]}"
fi
}
batslib_prefix() {
local -r prefix="${1:- }"
local line
while IFS='' read -r line || [[ -n $line ]]; do
printf '%s%s\n' "$prefix" "$line"
done
}
batslib_mark() {
local -r symbol="$1"; shift
# Sort line numbers.
set -- $( sort -nu <<< "$( printf '%d\n' "$@" )" )
local line
local -i idx=0
while IFS='' read -r line || [[ -n $line ]]; do
if (( ${1:--1} == idx )); then
printf '%s\n' "${symbol}${line:${#symbol}}"
shift
else
printf '%s\n' "$line"
fi
(( ++idx ))
done
}
batslib_decorate() {
echo
echo "-- $1 --"
cat -
echo '--'
echo
}
############################################################
assert() {
if ! "$@"; then
batslib_print_kv_single 10 'expression' "$*" \
| batslib_decorate 'assertion failed' \
| fail
fi
}
assert_equal() {
if [[ $1 != "$2" ]]; then
batslib_print_kv_single_or_multi 8 \
'expected' "$2" \
'actual' "$1" \
| batslib_decorate 'values do not equal' \
| fail
fi
}
assert_failure() {
: "${output?}"
: "${status?}"
(( $# > 0 )) && local -r expected="$1"
if (( status == 0 )); then
batslib_print_kv_single_or_multi 6 'output' "$output" \
| batslib_decorate 'command succeeded, but it was expected to fail' \
| fail
elif (( $# > 0 )) && (( status != expected )); then
{ local -ir width=8
batslib_print_kv_single "$width" \
'expected' "$expected" \
'actual' "$status"
batslib_print_kv_single_or_multi "$width" \
'output' "$output"
} \
| batslib_decorate 'command failed as expected, but status differs' \
| fail
fi
}
assert_line() {
local -i is_match_line=0
local -i is_mode_partial=0
local -i is_mode_regexp=0
: "${lines?}"
# Handle options.
while (( $# > 0 )); do
case "$1" in
-n|--index)
if (( $# < 2 )) || ! [[ $2 =~ ^([0-9]|[1-9][0-9]+)$ ]]; then
echo "\`--index' requires an integer argument: \`$2'" \
| batslib_decorate 'ERROR: assert_line' \
| fail
return $?
fi
is_match_line=1
local -ri idx="$2"
shift 2
;;
-p|--partial) is_mode_partial=1; shift ;;
-e|--regexp) is_mode_regexp=1; shift ;;
--) shift; break ;;
*) break ;;
esac
done
if (( is_mode_partial )) && (( is_mode_regexp )); then
echo "\`--partial' and \`--regexp' are mutually exclusive" \
| batslib_decorate 'ERROR: assert_line' \
| fail
return $?
fi
# Arguments.
local -r expected="$1"
if (( is_mode_regexp == 1 )) && [[ '' =~ $expected ]] || (( $? == 2 )); then
echo "Invalid extended regular expression: \`$expected'" \
| batslib_decorate 'ERROR: assert_line' \
| fail
return $?
fi
# Matching.
if (( is_match_line )); then
# Specific line.
if (( is_mode_regexp )); then
if ! [[ ${lines[$idx]} =~ $expected ]]; then
batslib_print_kv_single 6 \
'index' "$idx" \
'regexp' "$expected" \
'line' "${lines[$idx]}" \
| batslib_decorate 'regular expression does not match line' \
| fail
fi
elif (( is_mode_partial )); then
if [[ ${lines[$idx]} != *"$expected"* ]]; then
batslib_print_kv_single 9 \
'index' "$idx" \
'substring' "$expected" \
'line' "${lines[$idx]}" \
| batslib_decorate 'line does not contain substring' \
| fail
fi
else
if [[ ${lines[$idx]} != "$expected" ]]; then
batslib_print_kv_single 8 \
'index' "$idx" \
'expected' "$expected" \
'actual' "${lines[$idx]}" \
| batslib_decorate 'line differs' \
| fail
fi
fi
else
# Contained in output.
if (( is_mode_regexp )); then
local -i idx
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
[[ ${lines[$idx]} =~ $expected ]] && return 0
done
{ local -ar single=( 'regexp' "$expected" )
local -ar may_be_multi=( 'output' "$output" )
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
batslib_print_kv_single "$width" "${single[@]}"
batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
} \
| batslib_decorate 'no output line matches regular expression' \
| fail
elif (( is_mode_partial )); then
local -i idx
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
[[ ${lines[$idx]} == *"$expected"* ]] && return 0
done
{ local -ar single=( 'substring' "$expected" )
local -ar may_be_multi=( 'output' "$output" )
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
batslib_print_kv_single "$width" "${single[@]}"
batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
} \
| batslib_decorate 'no output line contains substring' \
| fail
else
local -i idx
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
[[ ${lines[$idx]} == "$expected" ]] && return 0
done
{ local -ar single=( 'line' "$expected" )
local -ar may_be_multi=( 'output' "$output" )
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
batslib_print_kv_single "$width" "${single[@]}"
batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
} \
| batslib_decorate 'output does not contain line' \
| fail
fi
fi
}
assert_output() {
local -i is_mode_partial=0
local -i is_mode_regexp=0
local -i is_mode_nonempty=0
local -i use_stdin=0
: "${output?}"
# Handle options.
if (( $# == 0 )); then
is_mode_nonempty=1
fi
while (( $# > 0 )); do
case "$1" in
-p|--partial) is_mode_partial=1; shift ;;
-e|--regexp) is_mode_regexp=1; shift ;;
-|--stdin) use_stdin=1; shift ;;
--) shift; break ;;
*) break ;;
esac
done
if (( is_mode_partial )) && (( is_mode_regexp )); then
echo "\`--partial' and \`--regexp' are mutually exclusive" \
| batslib_decorate 'ERROR: assert_output' \
| fail
return $?
fi
# Arguments.
local expected
if (( use_stdin )); then
expected="$(cat -)"
else
expected="${1-}"
fi
# Matching.
if (( is_mode_nonempty )); then
if [ -z "$output" ]; then
echo 'expected non-empty output, but output was empty' \
| batslib_decorate 'no output' \
| fail
fi
elif (( is_mode_regexp )); then
if [[ '' =~ $expected ]] || (( $? == 2 )); then
echo "Invalid extended regular expression: \`$expected'" \
| batslib_decorate 'ERROR: assert_output' \
| fail
elif ! [[ $output =~ $expected ]]; then
batslib_print_kv_single_or_multi 6 \
'regexp' "$expected" \
'output' "$output" \
| batslib_decorate 'regular expression does not match output' \
| fail
fi
elif (( is_mode_partial )); then
if [[ $output != *"$expected"* ]]; then
batslib_print_kv_single_or_multi 9 \
'substring' "$expected" \
'output' "$output" \
| batslib_decorate 'output does not contain substring' \
| fail
fi
else
if [[ $output != "$expected" ]]; then
batslib_print_kv_single_or_multi 8 \
'expected' "$expected" \
'actual' "$output" \
| batslib_decorate 'output differs' \
| fail
fi
fi
}
assert_success() {
: "${output?}"
: "${status?}"
if (( status != 0 )); then
{ local -ir width=6
batslib_print_kv_single "$width" 'status' "$status"
batslib_print_kv_single_or_multi "$width" 'output' "$output"
} \
| batslib_decorate 'command failed' \
| fail
fi
}
refute() {
if "$@"; then
batslib_print_kv_single 10 'expression' "$*" \
| batslib_decorate 'assertion succeeded, but it was expected to fail' \
| fail
fi
}
refute_line() {
local -i is_match_line=0
local -i is_mode_partial=0
local -i is_mode_regexp=0
: "${lines?}"
# Handle options.
while (( $# > 0 )); do
case "$1" in
-n|--index)
if (( $# < 2 )) || ! [[ $2 =~ ^([0-9]|[1-9][0-9]+)$ ]]; then
echo "\`--index' requires an integer argument: \`$2'" \
| batslib_decorate 'ERROR: refute_line' \
| fail
return $?
fi
is_match_line=1
local -ri idx="$2"
shift 2
;;
-p|--partial) is_mode_partial=1; shift ;;
-e|--regexp) is_mode_regexp=1; shift ;;
--) shift; break ;;
*) break ;;
esac
done
if (( is_mode_partial )) && (( is_mode_regexp )); then
echo "\`--partial' and \`--regexp' are mutually exclusive" \
| batslib_decorate 'ERROR: refute_line' \
| fail
return $?
fi
# Arguments.
local -r unexpected="$1"
if (( is_mode_regexp == 1 )) && [[ '' =~ $unexpected ]] || (( $? == 2 )); then
echo "Invalid extended regular expression: \`$unexpected'" \
| batslib_decorate 'ERROR: refute_line' \
| fail
return $?
fi
# Matching.
if (( is_match_line )); then
# Specific line.
if (( is_mode_regexp )); then
if [[ ${lines[$idx]} =~ $unexpected ]]; then
batslib_print_kv_single 6 \
'index' "$idx" \
'regexp' "$unexpected" \
'line' "${lines[$idx]}" \
| batslib_decorate 'regular expression should not match line' \
| fail
fi
elif (( is_mode_partial )); then
if [[ ${lines[$idx]} == *"$unexpected"* ]]; then
batslib_print_kv_single 9 \
'index' "$idx" \
'substring' "$unexpected" \
'line' "${lines[$idx]}" \
| batslib_decorate 'line should not contain substring' \
| fail
fi
else
if [[ ${lines[$idx]} == "$unexpected" ]]; then
batslib_print_kv_single 5 \
'index' "$idx" \
'line' "${lines[$idx]}" \
| batslib_decorate 'line should differ' \
| fail
fi
fi
else
# Line contained in output.
if (( is_mode_regexp )); then
local -i idx
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
if [[ ${lines[$idx]} =~ $unexpected ]]; then
{ local -ar single=( 'regexp' "$unexpected" 'index' "$idx" )
local -a may_be_multi=( 'output' "$output" )
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
batslib_print_kv_single "$width" "${single[@]}"
if batslib_is_single_line "${may_be_multi[1]}"; then
batslib_print_kv_single "$width" "${may_be_multi[@]}"
else
may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" | batslib_prefix | batslib_mark '>' "$idx" )"
batslib_print_kv_multi "${may_be_multi[@]}"
fi
} \
| batslib_decorate 'no line should match the regular expression' \
| fail
return $?
fi
done
elif (( is_mode_partial )); then
local -i idx
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
if [[ ${lines[$idx]} == *"$unexpected"* ]]; then
{ local -ar single=( 'substring' "$unexpected" 'index' "$idx" )
local -a may_be_multi=( 'output' "$output" )
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
batslib_print_kv_single "$width" "${single[@]}"
if batslib_is_single_line "${may_be_multi[1]}"; then
batslib_print_kv_single "$width" "${may_be_multi[@]}"
else
may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" | batslib_prefix | batslib_mark '>' "$idx" )"
batslib_print_kv_multi "${may_be_multi[@]}"
fi
} \
| batslib_decorate 'no line should contain substring' \
| fail
return $?
fi
done
else
local -i idx
for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
if [[ ${lines[$idx]} == "$unexpected" ]]; then
{ local -ar single=( 'line' "$unexpected" 'index' "$idx" )
local -a may_be_multi=( 'output' "$output" )
local -ir width="$( batslib_get_max_single_line_key_width "${single[@]}" "${may_be_multi[@]}" )"
batslib_print_kv_single "$width" "${single[@]}"
if batslib_is_single_line "${may_be_multi[1]}"; then
batslib_print_kv_single "$width" "${may_be_multi[@]}"
else
may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" | batslib_prefix | batslib_mark '>' "$idx" )"
batslib_print_kv_multi "${may_be_multi[@]}"
fi
} \
| batslib_decorate 'line should not be in output' \
| fail
return $?
fi
done
fi
fi
}
refute_output() {
local -i is_mode_partial=0
local -i is_mode_regexp=0
local -i is_mode_empty=0
local -i use_stdin=0
: "${output?}"
# Handle options.
if (( $# == 0 )); then
is_mode_empty=1
fi
while (( $# > 0 )); do
case "$1" in
-p|--partial) is_mode_partial=1; shift ;;
-e|--regexp) is_mode_regexp=1; shift ;;
-|--stdin) use_stdin=1; shift ;;
--) shift; break ;;
*) break ;;
esac
done
if (( is_mode_partial )) && (( is_mode_regexp )); then
echo "\`--partial' and \`--regexp' are mutually exclusive" \
| batslib_decorate 'ERROR: refute_output' \
| fail
return $?
fi
# Arguments.
local unexpected
if (( use_stdin )); then
unexpected="$(cat -)"
else
unexpected="${1-}"
fi
if (( is_mode_regexp == 1 )) && [[ '' =~ $unexpected ]] || (( $? == 2 )); then
echo "Invalid extended regular expression: \`$unexpected'" \
| batslib_decorate 'ERROR: refute_output' \
| fail
return $?
fi
# Matching.
if (( is_mode_empty )); then
if [ -n "$output" ]; then
batslib_print_kv_single_or_multi 6 \
'output' "$output" \
| batslib_decorate 'output non-empty, but expected no output' \
| fail
fi
elif (( is_mode_regexp )); then
if [[ $output =~ $unexpected ]]; then
batslib_print_kv_single_or_multi 6 \
'regexp' "$unexpected" \
'output' "$output" \
| batslib_decorate 'regular expression should not match output' \
| fail
fi
elif (( is_mode_partial )); then
if [[ $output == *"$unexpected"* ]]; then
batslib_print_kv_single_or_multi 9 \
'substring' "$unexpected" \
'output' "$output" \
| batslib_decorate 'output should not contain substring' \
| fail
fi
else
if [[ $output == "$unexpected" ]]; then
batslib_print_kv_single_or_multi 6 \
'output' "$output" \
| batslib_decorate 'output equals, but it was expected to differ' \
| fail
fi
fi
}

29
jq/difference-of-squares/bats-jq.bash Normal file
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@ -0,0 +1,29 @@
#!/usr/bin/env bash
#
# `bats-core` will consume both stdout and stderr for the `run` command's output.
# However `jq` prints its DEBUG output on stderr.
#
# Lines starting with `["DEBUG:",` will be prefixed with a hash and printed on file descriptor 3.
# Other lines on stderr will remain on stderr for bats to consume.
#
# See `bats-core` docs:
# - "Printing to the terminal", https://bats-core.readthedocs.io/en/stable/writing-tests.html#printing-to-the-terminal
# - "File descriptor 3", https://bats-core.readthedocs.io/en/stable/writing-tests.html#file-descriptor-3-read-this-if-bats-hangs
jq() {
local output stderr rc line
stderr=$(mktemp)
output=$(command jq "$@" 2> "$stderr")
rc=$?
while IFS= read -r line || [[ -n $line ]]; do
if [[ $line == '["DEBUG:",'* ]]; then
echo "# $line" >&3
else
echo "$line" >&2
fi
done < "$stderr"
rm -f "$stderr"
echo "$output"
return "$rc"
}

8
jq/difference-of-squares/difference-of-squares.jq Normal file
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([range(1;.input.number+1)]) as $n
| if .property == "squareOfSum"
then pow(($n|add);2)
elif .property == "sumOfSquares"
then $n|map(pow(.; 2))|add
elif .property == "differenceOfSquares"
then pow(($n|add);2) - ($n|map(pow(.; 2))|add)
end

157
jq/difference-of-squares/test-difference-of-squares.bats Normal file
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#!/usr/bin/env bats
# generated on 2024-02-21T23:55:25Z
load bats-extra
load bats-jq
@test 'Square the sum of the numbers up to the given number:square of sum 1' {
#
run jq -r -f difference-of-squares.jq << 'END_INPUT'
{
"property": "squareOfSum",
"input": {
"number": 1
}
}
END_INPUT
assert_success
expected=1
assert_equal "$output" "$expected"
}
@test 'Square the sum of the numbers up to the given number:square of sum 5' {
run jq -r -f difference-of-squares.jq << 'END_INPUT'
{
"property": "squareOfSum",
"input": {
"number": 5
}
}
END_INPUT
assert_success
expected=225
assert_equal "$output" "$expected"
}
@test 'Square the sum of the numbers up to the given number:square of sum 100' {
run jq -r -f difference-of-squares.jq << 'END_INPUT'
{
"property": "squareOfSum",
"input": {
"number": 100
}
}
END_INPUT
assert_success
expected=25502500
assert_equal "$output" "$expected"
}
@test 'Sum the squares of the numbers up to the given number:sum of squares 1' {
run jq -r -f difference-of-squares.jq << 'END_INPUT'
{
"property": "sumOfSquares",
"input": {
"number": 1
}
}
END_INPUT
assert_success
expected=1
assert_equal "$output" "$expected"
}
@test 'Sum the squares of the numbers up to the given number:sum of squares 5' {
run jq -r -f difference-of-squares.jq << 'END_INPUT'
{
"property": "sumOfSquares",
"input": {
"number": 5
}
}
END_INPUT
assert_success
expected=55
assert_equal "$output" "$expected"
}
@test 'Sum the squares of the numbers up to the given number:sum of squares 100' {
run jq -r -f difference-of-squares.jq << 'END_INPUT'
{
"property": "sumOfSquares",
"input": {
"number": 100
}
}
END_INPUT
assert_success
expected=338350
assert_equal "$output" "$expected"
}
@test 'Subtract sum of squares from square of sums:difference of squares 1' {
run jq -r -f difference-of-squares.jq << 'END_INPUT'
{
"property": "differenceOfSquares",
"input": {
"number": 1
}
}
END_INPUT
assert_success
expected=0
assert_equal "$output" "$expected"
}
@test 'Subtract sum of squares from square of sums:difference of squares 5' {
run jq -r -f difference-of-squares.jq << 'END_INPUT'
{
"property": "differenceOfSquares",
"input": {
"number": 5
}
}
END_INPUT
assert_success
expected=170
assert_equal "$output" "$expected"
}
@test 'Subtract sum of squares from square of sums:difference of squares 100' {
run jq -r -f difference-of-squares.jq << 'END_INPUT'
{
"property": "differenceOfSquares",
"input": {
"number": 100
}
}
END_INPUT
assert_success
expected=25164150
assert_equal "$output" "$expected"
}