함수 array_count_values()

uniq -c

array_count_values

1 Bash

Bash

CPU

0.0s

MEM

3M

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ARR=(1 "hello" 1 "world" "hello")
for VALUE in "${ARR[@]}"; do
	echo $VALUE
done | sort | uniq -c

      2 1
      2 hello
      1 world

2 POSIX Shell

Bash

CPU

0.0s

MEM

3M

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ARR="1 hello 1 world hello"
for VALUE in $ARR
do
        echo $VALUE
done | sort | uniq -c

      2 1
      2 hello
      1 world

3 C

C언어 array_count_values() 문서를 참고하십시오.

4 PHP

PHP array_count_values() 문서를 참고하십시오.

PHP

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$arr = [1, 'hello', 1, 'world', 'hello'];
print_r(array_count_values($arr));

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5 Python

Python

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import collections
lst = [1, 'hello', 1, 'world', 'hello']
print( collections.Counter(lst) )

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6 Perl

Perl

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my %cnt;
my @lst = (1, 'hello', 1, 'world', 'hello');
$cnt{$_}++ for @lst;
print %cnt;

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7 R

R table() 문서를 참고하십시오.

R

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v <- c(1, 'hello', 1, 'world', 'hello')
table(v)

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8 SQL

8.1 MySQL

Console

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mysql> SELECT * FROM array;
+-------+
| value |
+-------+
| 1     |
| hello |
| 1     |
| world |
| hello |
+-------+
5 rows in set (0.00 sec)

Console

Copy

mysql> SELECT value, COUNT(*) FROM array GROUP BY value;
+-------+----------+
| value | COUNT(*) |
+-------+----------+
| 1     |        2 |
| hello |        2 |
| world |        1 |
+-------+----------+
3 rows in set (0.00 sec)

9 같이 보기

• 함수 array_unique()
• 함수 array_count_value()
• 함수 majority()