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Total-Number-of-Unique-Characters
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README.md

Total Number of Unique Characters

by Helen Yu tags: strings, data_structures

Summary

Given two strings, create a function that returns the total number of unique characters from the combined string. Examples countUnique("apple", "play") ➞ 5 // "appleplay" has 5 unique characters: // "a", "e", "l", "p", "y" countUnique("sore", "zebra") ➞ 7 // "sorezebra" has 7 unique characters: // "a", "b", "e", "o", "r", "s", "z" countUnique("a", "soup") ➞

Instructions

Given two strings, create a function that returns the total number of unique characters from the combined string.

Examples

countUnique("apple", "play") ➞ 5
// "appleplay" has 5 unique characters:
// "a", "e", "l", "p", "y"

countUnique("sore", "zebra") ➞ 7
// "sorezebra" has 7 unique characters:
// "a", "b", "e", "o", "r", "s", "z"

countUnique("a", "soup") ➞ 5

Notes

  • Each word will contain at least one letter.
  • All words will be lower cased.