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Returning poker pair cards - JavaScript
We are required to write a function that takes in an array of exactly five elements representing the five cards of a poker player drawn randomly.
If the five cards contain at least one pair, our function should return the card number of the highest pair (trivial if there only exists a single pair). Else our function should return false.
For example: If the array is −
const arr = ['A', 'Q', '3', 'A', 'Q'];
Then our function should return −
'A' (as 'A' > 'Q' in card games)
Example
Following is the code −
const arr = ['A', 'Q', '3', 'A', 'Q'];
const greatestPair = arr => {
const legend = '23456789JQKA';
const pairs = [];
for(let i = 0; i < arr.length; i++){
if(i !== arr.lastIndexOf(arr[i])){
pairs.push(arr[i]);
};
};
if(!pairs.length){
return false;
};
pairs.sort((a, b) => legend.indexOf(b) - legend.indexOf(a));
return pairs[0];
};
console.log(greatestPair(arr));Output
Following is the output in the console −
A
Updated on: 18-Sep-2020
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