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Java, 132 (System.in) or 99 (Program argument) bytes

Can you feel the overhead tonight?

class F{public static void main(String[]a){System.out.print(new java.util.Scanner(System.in).nextLine().replaceAll("(.)", "$0 "));}}
class W{public static void main(String[]a){for(char c:a[0].toCharArray())System.out.print(c+" ");}}

shooqie figured out a 6 byte shorter way to do this but I won't steal their approach. I've used it with the STDIN and lambda versions, however.

28 characters for a lambda but that doesn't meet the program requirement.

s->s.replaceAll("(.)","$0 ")

Java, 132 (System.in) or 99 (Program argument) bytes

Can you feel the overhead tonight?

class F{public static void main(String[]a){System.out.print(new java.util.Scanner(System.in).nextLine().replaceAll("(.)", "$0 "));}}
class W{public static void main(String[]a){for(char c:a[0].toCharArray())System.out.print(c+" ");}}

shooqie figured out a 6 byte shorter way to do this but I won't steal their approach. I've used it with the STDIN and lambda versions, however.

28 characters for a lambda but that doesn't meet the program requirement.

s->s.replaceAll("(.)","$0 ")

Java, 132 (System.in) or 99 (Program argument) bytes

Can you feel the overhead tonight?

class F{public static void main(String[]a){System.out.print(new java.util.Scanner(System.in).nextLine().replaceAll("(.)", "$0 "));}}
class W{public static void main(String[]a){for(char c:a[0].toCharArray())System.out.print(c+" ");}}

shooqie figured out a 6 byte shorter way to do this but I won't steal their approach. I've used it with the STDIN and lambda versions, however.

28 characters for a lambda but that doesn't meet the program requirement.

s->s.replaceAll("(.)","$0 ")

Java, 132 (System.in) or 99 (Program argument) bytes

Can you feel the overhead tonight?

class F{public static void main(String[]a){System.out.print(new java.util.Scanner(System.in).nextLine().replaceAll("(.)", "$0 "));}}
class W{public static void main(String[]a){for(char c:a[0].toCharArray())System.out.print(c+" ");}}

shooqie figured out a 6 byte shorter way to do this but I won't steal their approach. I've used it with the STDIN and lambda versions, however.

28 characters for a lambda but that doesn't meet the program requirement.

s->s.replaceAll("(.)","$0 ")

Java, 132 (System.in) or 99 (Program argument) bytes

Can you feel the overhead tonight?

class F{public static void main(String[]a){System.out.print(new java.util.Scanner(System.in).nextLine().replaceAll("(.)", "$0 "));}}
class W{public static void main(String[]a){for(char c:a[0].toCharArray())System.out.print(c+" ");}}

shooqie figured out a 6 byte shorter way to do this but I won't steal their approach. I've used it with the STDIN and lambda versions, however.

28 characters for a lambda but that doesn't meet the program requirement.

s->s.replaceAll("(.)","$0 ")

Version that reads from System.in will come when I get to a proper IDE to test in.

Java, 132 (System.in) or 99 (Program argument) bytes

Can you feel the overhead tonight?

class F{public static void main(String[]a){System.out.print(new java.util.Scanner(System.in).nextLine().replaceAll("(.)", "$0 "));}}
class W{public static void main(String[]a){for(char c:a[0].toCharArray())System.out.print(c+" ");}}

shooqie figured out a 6 byte shorter way to do this but I won't steal their approach. I've used it with the STDIN and lambda versions, however.

28 characters for a lambda but that doesn't meet the program requirement.

s->s.replaceAll("(.)","$0 ")