Java for loop prob

Question

I have two Strings,A and B, A has the value of "ABCDE" and B the value of "12345" and I would like to make a for loop that makes the String C, to have the value of "A1B2C3D4E5", the problem is that the value of A and B may vary, A and B can be equal or A greater than B just by one character, only these two options are possible:

if(A.length()>B.length()){
   B=B+"_";
}
int length=A.length()+B.length();
for(int count = 0; count == length;count++){
   C=C+A.charAt(count)+B.charAt(count);
}
System.out.println(C);

But nothing prints out.

homework? do you know debugger?

1ac0
– 1ac0

2014-11-19 17:21:50 +00:00
Commented Nov 19, 2014 at 17:21 — 1ac0
– 1ac0, Commented Nov 19, 2014 at 17:21

subash · Accepted Answer · 2014-11-19 17:19:15Z

3

just try like this

    for(int count = 0; count < length/2;count++){
       C=C+A.charAt(count)+B.charAt(count);
    }

answered Nov 19, 2014 at 17:19

subash

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Comments

La-comadreja · Accepted Answer · 2014-11-19 17:26:32Z

0

Your problem is your conditional in the for loop, "count == length". This would mean the for loop runs so long as count is equal to length, i.e. it will not run unless the length is 0 (the initial condition of count).

You could write:

if (A.length() > B.length()) B += "_";
for (int i = 0; i < A.length(); i++) C = C + A.charAt(i) + B.charAt(i);
System.out.println(C);

answered Nov 19, 2014 at 17:26

La-comadreja

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Comments

holtc · Accepted Answer · 2014-11-19 17:38:01Z

0

int max = B.length()
if (A.length() > B.length()){
    max = A.length()
}
String C = "";
for (int i = 0; i < max; i++){
    if (i < A.length){
        C = C + A.charAt(i)
    }
    if (i < B.length){
        C = C + B.charAt(i);
    }
}

This checks to get the maximum length to iterate, and then in the for loop, only adds characters that exist, in an alternating pattern from each string until one string is empty, and then the rest of the other string is appended to the end one character at a time. This allows for this method of concatenation on two strings of any length, not just strings with lengths that differ by 1.

answered Nov 19, 2014 at 17:38

holtc

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