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Raw. public boolean isInteger (String str) { int len = str.length (); // an empty string is not an integer if (len == 0) { return false; } for (int i = 0; i < len; ++i) { if (!Character.isDigit (str.charAt (i))) { return false; } } // Went over all the characters, all of them are digits return true; } 1.
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$$ 3.6.5 is not an integer because it contains a decimal point. $$... View the full answer
Using x[i] needs i to be an integer, and it gets “h” instead, and stops. Using it like that, you want to use a range, set to the length of the string. For example, “for i in range(5):”, or if you need the length of the string to change, “for i in range(len(x)):”.
function main() {let dog = true; console.log("Do you have a dog"); console.log(typeof(dog)); console.log("dose this user have a dog?: " + dog);} main();
