EasyFoundational

Count Occurrences of a Character

Time limit: 1 s
Memory limit: 128 MB
Estimated: 15 min

Description

Given a string s and a single character ch, return the number of times ch occurs in s.

The comparison is case-sensitive. For example, a and A are different characters. If ch does not occur in the string, return 0. If the input string is empty, the result is also 0.

The character ch is guaranteed to contain exactly one character. The string may contain letters, digits, spaces, or punctuation.

Examples:

s = "banana", ch = "a" returns 3.
s = "Hello", ch = "l" returns 2.
s = "Hello", ch = "h" returns 0.

Implement countOccurrences(s, ch).

Constraints

0 <= s.length <= 100000 ch.length = 1 s and ch contain standard ASCII characters.

Sample cases

Sample 1
Input
```
s = "banana"
ch = "a"
```
Expected output
```
3
```
Sample 2
Input
```
s = "Hello"
ch = "l"
```
Expected output
```
2
```

Skills and languages

Patterns

Frequency Counting

Languages

Python 3

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Sample 1

Input

Expected output

Sample 2

Input

Expected output

Patterns

Languages

Solve this problem

Sample 3

Input

Expected output