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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | function sumAll(...args){ let sum = 0 for(let arg of args) sum +=arg return sum; } let arr = [3,5,1] let arr2 = [8,9,15] let merged = [0, ...arr, 2, ...arr2] console.log(merged) |