We read every piece of feedback, and take your input very seriously.
To see all available qualifiers, see our documentation.
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
给定一个整数数组,判定是否存在重复元素。
如果任何值在数组中出现至少两次,函数返回true。如果数组中每个元素都不相同,则返回false。
示例 1
输入:[1, 2, 3, 1] 输出:true
示例 2
输入:[1, 2, 3, 4] 输出:false
function hasRepeat(nums) { let hashMap = {}; return nums.some(item => { if (hashMap[item]) { return true; } hashMap[item] = true; }); }
The text was updated successfully, but these errors were encountered:
No branches or pull requests
给定一个整数数组,判定是否存在重复元素。
如果任何值在数组中出现至少两次,函数返回true。如果数组中每个元素都不相同,则返回false。
示例 1
示例 2
解答
The text was updated successfully, but these errors were encountered: