Ivan Fan
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Ivan Fan
```javascript function func(arr1, arr2) { let maxArr = arr1.length > arr2.length ? arr1: arr2 let minArr = arr1.length > arr2.length ? arr2: arr1 return maxArr.filter(item => minArr.find(min => min ===...
```javascript function func(str) { return (str+'').split('').reduce((init, next) => { init = init + next [next.toUpperCase() === next ? 'toLowerCase' : 'toUpperCase'](); return init }, '') } function func1(str) { return...