Convert String To Number Without Integer.parseInt In Java

Chapter: Interview Programs Last Updated: 29-04-2016 08:07:21 UTC

Program:

            /* ............... START ............... */
                
public class JavaStringToNumber {

	public static int convert_String_To_Number(String numStr) {

		char ch[] = numStr.toCharArray();
		int sum = 0;

		int zeroAscii = (int) '0';
		for (char c : ch) {
			int tmpAscii = (int) c;
			sum = (sum * 10) + (tmpAscii - zeroAscii);
		}
		return sum;
	}

	public static void main(String a[]) {

		System.out.println(convert_String_To_Number("2345"));
		System.out.println(convert_String_To_Number("27872"));
	}
}
                /* ............... END ............... */
        

Output

2345
27872

Tags

Convert String To Number Without Integer.parseInt, Java, Interview Programs

Similar Programs Chapter Last Updated
Java Program To Find Frequency Of Character In String Interview Programs 28-09-2017
Java Program To Find Power Of Number Using While Loop Interview Programs 30-08-2017
Java Program To Count Divisors Of Integer Number Interview Programs 24-06-2017
Java Program To Sort N Names In Ascending Order Interview Programs 24-06-2017
Java Program To Count Total Number Of Words In String Interview Programs 24-06-2017
Java Program To Print All Prime Numbers From 1 to N Interview Programs 24-06-2017
Java Program To Extract Digits / Numbers From String Interview Programs 22-09-2018
Java First Repeated Character In String Interview Programs 16-05-2017
Java String Character Repetition Count Interview Programs 15-05-2017
Java Program To Check Vowel Or Not Interview Programs 25-09-2018
Java Program To Check Alphabet Or Not Interview Programs 06-04-2017
Java Program To Find First Repeated And Non Repeated Character In String Interview Programs 25-03-2017
Java Spiral Matrix Interview Programs 22-09-2018
Java Program To Reverse A Number Using Strings Interview Programs 13-02-2017
Java Program To Print Diamond Star Pattern Interview Programs 16-12-2016
Java Program To Print Pyramid Pattern Of Star Interview Programs 16-12-2016
Java Program To Find Second Largest Number In Array Interview Programs 04-12-2016
Java Depth First Search Interview Programs 04-12-2016
Java Breadth First Search Interview Programs 04-12-2016
Java Linked List Length Recursive Solution Interview Programs 17-11-2016
Java Linked List Length Iterative Solution Interview Programs 17-11-2016
Java Linked List Node Deletion At Given Position Interview Programs 17-11-2016
Java Linked List Node Delete Interview Programs 17-11-2016
Java Sum Of Digits Using Recursion Interview Programs 06-11-2016
Java Program To Reverse Vowels Of String Interview Programs 05-11-2016
Java Program To Remove Vowels From String Interview Programs 05-11-2016
Java Find Top Two Maximum Numbers In Array Interview Programs 05-11-2016
Java QuickSort Example Interview Programs 05-11-2016
Java Binary Tree Spiral Level Traversal Interview Programs 04-11-2016
Java Binary Tree Preorder Traversal Interview Programs 04-11-2016

1 2 3 4 5