com.sl.algorithms.core.utils

Class StringOps

java.lang.Object

com.sl.algorithms.core.utils.StringOps

All Implemented Interfaces:

Constants

public class StringOps
extends java.lang.Object
implements Constants

Field Summary

Fields inherited from interface com.sl.algorithms.core.interfaces.base.Constants

ARRAY_IS_EMPTY, DATA_TYPE_NOT_SUPPORTED_YET, DECIMAL_RADIX, DELIMITER_COMMA, ELEMENT_NOT_FOUND, LIST_IS_EMPTY, OPERATION_NOT_SUPPORTED_YET

Method Summary

Modifier and Type	Method and Description
static int	atoi(java.lang.String str) Convert a given string to integer. 1.
static java.util.List<java.lang.String>	findPermutations(java.lang.String s) Print all case-sensitive permutations of a string, without changing the positions of any characters. Problem Reference
static boolean	isBitSet(int n, int offset)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

atoi

public static int atoi(java.lang.String str)

Convert a given string to integer.

1. Validate that the string only contains digits or (, +, -) signs.
2. If the string starts with '.' then it is immaterial value; break wherever '.' is encountered.
3. Ignore leading spaces.
4. Handle overflow.
5. Honor sign ('-' or '+'/empty).

Parameters:

str - input string

Returns:

output integer

findPermutations

public static java.util.List<java.lang.String> findPermutations(java.lang.String s)

Print all case-sensitive permutations of a string, without changing the positions of any characters.

Problem Reference

Parameters:

s - string to introspect

Returns:

List of permutations, including the string itself

isBitSet

public static boolean isBitSet(int n,
                               int offset)