题解 | #计数#
计数
https://www.nowcoder.com/practice/628339bd8e6e440590ad86caa7ac6849
function count(arr, item) {
let res = new Array();
res = arr.filter(e => {
return e == item;
})
return res.length;
}
计数
https://www.nowcoder.com/practice/628339bd8e6e440590ad86caa7ac6849
function count(arr, item) {
let res = new Array();
res = arr.filter(e => {
return e == item;
})
return res.length;
}
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