java-basics/java-programs/StringReverse.java at master · CodeForHunger/java-basics · GitHub

38 lines (31 loc) · 787 Bytes

package misc;

public class StringReverse {

static void reverse(String str) {

char[] inputArray = str.toCharArray();

char[] result = new char[inputArray.length];

// Mark spaces in result

for (int i = 0; i < inputArray.length; i++) {

if (inputArray[i] == ' ') {

result[i] = ' ';

}

// Traverse input string from beginning

// and put characters in result from end

int j = result.length - 1;

for (int i = 0; i < inputArray.length; i++) {

// Ignore spaces in input string

if (inputArray[i] != ' ') {

// ignore spaces in result.

if (result[j] == ' ') {

j--;

}

result[j] = inputArray[i];

j--;

}

System.out.println(String.valueOf(result));

}

public static void main(String[] args) {

reverse("Pradeep Kumar");

}

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