- Cobol String Replace
- Cobol String Command Example
- Cobol Find String In String
- Simple Java Palindrome Program
- String Palindrome Program In Cobol In Computer
- String Palindrome Program In Cobol Tutorial
Enterprise COBOL for z/OS, Version 4.2, Programming Guide Refer to a substring of a data item that has USAGE DISPLAY, DISPLAY-1, or NATIONAL by using a reference modifier. You can also refer to a substring of an alphanumeric or national character string that is returned by an intrinsic function by using a reference modifier. C Program to Check the Given String is Palindrome Example 1 This program for string palindrome in c allows the user to enter a string (or character array), and a character value. Next, it will check whether the user-specified string is a palindrome string or not.
Input: str = google Output: e l g o oo goog A simple solution would be to generate all substrings of the given string and print substrings that are palindrome. The complexity of this solution would be O(n 3). We can solve this problem in O(n 2) time and O(1) space. The idea is inspired from Longest Palindromic Substring problem. For each character in the given string, we consider it as mid.
- COBOL Tutorial
- COBOL Useful Resources
- Selected Reading
String handling statements in COBOL are used to do multiple functional operations on strings. Following are the string handling statements −
- Inspect
- String
- Unstring
Inspect
Inspect verb is used to count or replace the characters in a string. String operations can be performed on alphanumeric, numeric, or alphabetic values. Inspect operations are performed from left to right. The options used for the string operations are as follows −
Tallying
Tallying option is used to count the string characters.
Syntax
Following is the syntax of Tallying option −
The parameters used are −
- input-string − The string whose characters are to be counted.
- output-count − Data item to hold the count of characters.
Example
JCL to execute the above COBOL program.
When you compile and execute the above program, it produces the following result −
Replacing
Replacing option is used to replace the string characters.
Syntax
Cobol String Replace
Following is the syntax of Replacing option −
The parameter used is −
- input-string − The string whose characters are to be replaced from char1 to char2.
Example
JCL to execute the above COBOL program.
Cobol String Command Example
When you compile and execute the above program, it produces the following result −
String
String verb is used to concatenate the strings. Using STRING statement, two or more strings of characters can be combined to form a longer string. ‘Delimited By’ clause is compulsory.
Syntax
Following is the syntax of String verb −
Following are the details of the used parameters −
- ws-string1 and ws-string2 : Input strings to be concatenated
- ws-string : Output string
- ws-count : Used to count the length of new concatenated string
- Delimited specifies the end of string
- Pointer and Overflow are optional
Example
JCL to execute the above COBOL program −
When you compile and execute the above program, it produces the following result −
Unstring
Unstring verb is used to split one string into multiple sub-strings. Delimited By clause is compulsory.
Syntax
Following is the syntax of Unstring verb −
Cobol Find String In String
Example
JCL to execute the above COBOL program −
When you compile and execute the above program, it produces the following result −
HowToDoInJavaLearn to check if a given string is palindrome string with simple java programs using stack, queue or simple loops. In simplest words, a string is palindrome if it is equal to it’s reverse string.
A palindrome is a word, phrase, number, or other sequence of units that may be read the same way in either direction, generally if used comma, separators or other word dividers are ignored.
1. Algorithm
1.1. First approach
To check palindrome, we can pick the characters (one by one) from start and end of string and start comparing to each other.
- Pick first character and last character of string and compare. If both matches – continue. Else string is not palindrome.
- Pick second character from start and last, compare both. If both matches – continue. Else string is not palindrome.
- Continue above comparisons till both characters to compare are same or consecutive to each other.
1.2. Second approach
Simple Java Palindrome Program
Rather than comparing chars from start and end, we can also find the reverse string of the given string and compare both strings. If both strings are same, they are palindrome.
- Get character array from given string
- Build a string by iterating the array from end to beginning index
- Optionally – remove comma, separators or other word dividers from both strings
- Compare both strings
In this tutorial, we will see the examples of both approaches.
2. Check palindrome using reverse comparison
This method uses the first approach given above.
3. Check palindrome using StringBuilder.reverse()
StringBuilder.reverse()
method is shortest way to reverse a string using library functions.4. Check palindrome string using java.util.Stack
Using stack’s
push()
and pop()
methods, we can build a reverse string for a given string. Then we compare both strings.5. Check palindrome string using java.util.Queue
Using Queue’s
add()
and remove()
methods, we can build a reverse string for a given string. Then we compare both strings.6. Check palindrome string using loops
String Palindrome Program In Cobol In Computer
This is simplest approach which simply iterated the char array backwards and creates the string by appending chars to produce reverse string.
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