a valid number split component ordera decimal number integeroptional an e e follow integerA decimal number split component orderoptional a sign character one follow formatsone digit follow dot one digit follow dot follow digitsa dot follow digitsAn integer split component orderoptional a sign character one digitsfor example follow valid number 2 0089 01 314 4 9 2e10 90e3 3e7 6e1 535e93 123456e789 follow valid number abc 1a 1e e3 99e25 6 3 95a54e53given string s return true s valid number Example 1input s 0output trueExample 2input s eOutput falseexample 3input s output false Constraints1 slength 20 consist english letter uppercase lowercase digit 09 plus minus dot