What does compareTo return for strings?
The compareTo() method compares two strings lexicographically. The comparison is based on the Unicode value of each character in the strings. The method returns 0 if the string is equal to the other string.
What data type is returned from the compareTo () method?
compareTo() Return Values
compareTo() in java returns an integer value. It returns a positive integer if string1 is lexicographically greater than string2, negative if string2 is greater than string1, and zero if both are equal.
What values does compareTo return?
The compareTo() method returns three types of value, if both the string is equal, then it returns 0; if the first string is lexicographically greater than the second string, then it returns a positive value, if the second string is lexicographically greater than the first one, then it returns a negative value.
What does a negative return value indicate when calling the compareTo method on a string?
Java String compareTo(): empty string
If first string is an empty string, the method returns a negative. If second string is an empty string, the method returns a positive number that is the length of the first string.
What is compareTo () in Java?
compareTo() Method. The Java String class compareTo() method compares the given string with the current string lexicographically. It returns a positive number, negative number, or 0. It compares strings on the basis of the Unicode value of each character in the strings.
What is the value returned by function compareTo () If the invoking?
Explanation: compareTo() function returns zero when both the strings are equal, it returns a value less than zero if the invoking string is less than the other string being compared and value greater than zero when invoking string is greater than the string compared to.
What is the return type of the function compareTo () 1 point?
Q #5) What does the compareTo method return? Answer: Java compareTo() method’s return type is integer. The integer value can be zero, positive integer or negative integer.
How does string compare work in Java?
Using String. equals() :In Java, string equals() method compares the two given strings based on the data/content of the string. If all the contents of both the strings are same then it returns true. If any character does not match, then it returns false.
What is lexicographically greater string?
Lexicographically means in dictionary order,i.e.if two strings are compared based on dictionary position the string which comes afterwards is said to be Lexicographically greater.
What is difference between == equals () and compareTo () method?
equals() checks if two objects are the same or not and returns a boolean. compareTo() (from interface Comparable) returns an integer. It checks which of the two objects is “less than”, “equal to” or “greater than” the other.
How do you compare two strings in Java?
What is the use of compareTo () in Java?
What is the value returned by function compareTo () If the invoking string is greater than the string compared *?
4. What is the value returned by function compareTo() if the invoking string is greater than the string compared? Explanation: if (s1 == s2) then 0, if(s1 > s2) > 0, if (s1 < s2) then < 0.
Can we use == to compare strings in Java?
You should not use == (equality operator) to compare these strings because they compare the reference of the string, i.e. whether they are the same object or not. On the other hand, equals() method compares whether the value of the strings is equal, and not the object itself.
How do you lexicographically compare two strings?
The method compareTo() is used for comparing two strings lexicographically in Java.
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It returns the following values:
- if (string1 > string2) it returns a positive value.
- if both the strings are equal lexicographically i.e.(string1 == string2) it returns 0.
- if (string1 < string2) it returns a negative value.
How do I find the lexicographically largest string?
Approach: Iterate from min(L, R) to max(L, R) and increase the frequencies of characters in a freq[] array. Iterate from 25 to 0 and print the number of times every character occurs to get the lexicographically largest string.
Will two Object always be equal when their compareTo () method returns zero?
Now, if Comparable returns Zero, it means two objects are the same by comparison. If two objects are the same by using the equals method, it returns true.
Can you use == to compare strings in Java?
How does compareTo method work in Java?
What is compareTo() method in Java? compareTo() is used for comparing two strings lexicographically. Each character of both strings are converted into a Unicode value. However, if both the strings are equal, then this method returns 0 else it only result either negative or positive value.
How do you compare string values?
There are three ways to compare strings in Java. The Java equals() method compares two string objects, the equality operator == compares two strings, and the compareTo() method returns the number difference between two strings. String comparison is a crucial part of working with strings in Java.
What is meant by lexicographically?
: the editing or making of a dictionary. : the principles and practices of dictionary making. lexicographical.
What is lexicographically string?
Two strings are lexicographically equal if they are the same length and contain the same characters in the same positions.
What is the difference between equals () and compareTo () in Java?
The equals() tells the equality of two strings whereas the compareTo() method tell how strings are compared lexicographically.
Why compareTo () should be consistent to equals () method in Java?
2) CompareTo must be in consistent with equals method e.g. if two objects are equal via equals() , there compareTo() must return zero otherwise if those objects are stored in SortedSet or SortedMap they will not behave properly.
Which statement is used to compare the two strings?
String strcmp() function in C++
In order to compare two strings, we can use String’s strcmp() function. The strcmp() function is a C library function used to compare two strings in a lexicographical manner. The function returns 0 if both the strings are equal or the same.