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class Solution {
public List<String> letterCombinations(String digits) {
}
}
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class Solution {
public:
vector<string> letterCombinations(string digits) {
}
};
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/**
* Note: The returned array must be malloced, assume caller calls free().
*/
char ** letterCombinations(char * digits, int* returnSize){
}
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public class Solution {
public IList<string> LetterCombinations(string digits) {
}
}
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/**
* @param {string} digits
* @return {string[]}
*/
var letterCombinations = function(digits) {
};
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class Solution {
func letterCombinations(_ digits: String) -> [String] {
}
}
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class Solution {
/**
* @param String $digits
* @return String[]
*/
function letterCombinations($digits) {
}
}
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# @param {String} digits
# @return {String[]}
def letter_combinations(digits)
end