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First solution in Clear category for Sum by Type by suic
function sumByTypes(values: Array): [string, number] {
let strings: string[] = [];
let sum: number = 0;
for (const value of values) {
if(typeof value === 'string') {
strings.push(value);
}
else if (typeof value === 'number') {
sum += value;
}
}
return [strings.join(''), sum];
}
Aug. 10, 2020