Is there a way to see if there is only numbers in a string?
43229
How to check if a string contains only digits in Java
41594
return only Digits 0-9 from a String
27492
Testing if given number is integer
134785
How to check any missing number from a series of numbers?
26842
Function to check if input string is an integer or floating point number?
64322
How do I number equations only if they are referred to in the text?
58046
How to check whether a string contains a substring in JavaScript?
20696
How to check if an expression is a real-valued number
156588
Test if a string contains any of the strings from an array
67428
How do I determine whether an array contains a particular value in Java?
69387
How to extract a number from a string
121612
Finding all numbers in a string
1912
Find and extract a number from a string
11398
How do I count the number of occurrences of a char in a String?
9258
Test if string ONLY contains given characters
33574
Comparing a string with the empty string (Java)
29812
How do I test if a variable is a number in Bash?