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获得徽章 15
兄弟们，leetcode202题的快乐数，我快乐不起来了
是不是leetcode有bug啊（自信点，我没问题）
```
let stack = []
var isHappy = function (n) {
let str = n + ""
let result = n
while (result !== 1) {
result = 0
for (let v of str) {
result += (+v) ** 2
}
if (stack.includes(result)) {
return false
}
stack.push(result)
str = result + ""
}
return true
};
```
是不是leetcode有bug啊（自信点，我没问题）
```
let stack = []
var isHappy = function (n) {
let str = n + ""
let result = n
while (result !== 1) {
result = 0
for (let v of str) {
result += (+v) ** 2
}
if (stack.includes(result)) {
return false
}
stack.push(result)
str = result + ""
}
return true
};
```
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