LeetCode OJ Problems Pick One! Submissions Discuss Book Sign up Sign in <form class="navbar-form pull-right"> <input class="col-md-2" type="text" placeholder="Email"> <input class="col-md-2" type="password" placeholder="Password"> <button type="submit" class="btn">Sign in</button> </form> /.navbar-collapse Total Accepted: 17798 Total Submissions: 160373 My Submissions Question Solution Validate if a given string is numeric. Some examples: "0" => true " 0.1 " => true "abc" => false "1 a" => false "2e10" => true Note: It is intended for the problem statement to be ambiguous. You should gather all requirements up front before implementing one. click to show spoilers. Update (2014-12-06): New test cases had been added. Thanks unfounder 's contribution. Show Tags Math String ...