题解 | #计数#
https://www.nowcoder.com/practice/628339bd8e6e440590ad86caa7ac6849
function count(arr, item) { let num = 0; for(let k of arr){ num += item==k } return num }
https://www.nowcoder.com/practice/628339bd8e6e440590ad86caa7ac6849
function count(arr, item) { let num = 0; for(let k of arr){ num += item==k } return num }
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