Hi Alisa,
Thanks for the series. I also solved it with same approach but used different techniques. I am sharing mine , hope it helps someone else.
var frequencySort = function(s) { const charCountHash = Array.from(s).reduce((acc,ch) => { acc[ch] = (acc[ch] || 0) + 1; return acc; }, {}); return Object.entries(charCountHash).sort((a,b) => b[1] - a[1]).reduce((acc,charHash) => { const [ch,count] = charHash; return acc += ch.repeat(count); }, ""); };
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Hi Alisa,
Thanks for the series. I also solved it with same approach but used different techniques. I am sharing mine , hope it helps someone else.