ALG-E007EasyStrings

Vowel Counter

Count the English vowels a, e, i, o, u in text. Uppercase and lowercase vowels count equally; y does not count.

Contract

input text: string

return integer

Constraints

• Input uses ASCII characters
• 0 <= text length <= 1000

Examples

Example 1

text = "Algorithm"

→ 3

Example 2

text = "why"

→ 0

5 judge tests (2 shown above). Target complexity: O(n).

Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.

Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.

Add

Select a node to edit it.

• Click a block in Add to insert it after the selected node, or drag it onto the canvas.
• Drag from a node’s bottom/right dot to another node to connect them. Connecting a used port replaces its old connection.
• Select a node or connection and press Delete to remove it.
• Your chart is saved automatically in this browser.

Expression & node reference ↗