题解 | #数组合并#
数组合并
https://www.nowcoder.com/practice/ba9ee11affbd44539a4104d7f098f06b
function concat(arr1, arr2) {
var arr3 = []
for (let i=0;i<arr2.length;i++) {
arr3[i] = arr1[i];
arr3[arr1.length+i] = arr2[i]
}
return arr3
}
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