README_EN.md

1678. Goal Parser Interpretation

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Description

You own a Goal Parser that can interpret a string command. The command consists of an alphabet of "G", "()" and/or "(al)" in some order. The Goal Parser will interpret "G" as the string "G", "()" as the string "o", and "(al)" as the string "al". The interpreted strings are then concatenated in the original order.

Given the string command, return the Goal Parser's interpretation of command.

 

Example 1:

Input: command = "G()(al)"
Output: "Goal"
Explanation: The Goal Parser interprets the command as follows:
G -> G
() -> o
(al) -> al
The final concatenated result is "Goal".

Example 2:

Input: command = "G()()()()(al)"
Output: "Gooooal"

Example 3:

Input: command = "(al)G(al)()()G"
Output: "alGalooG"

 

Constraints:

• 1 <= command.length <= 100
• command consists of "G", "()", and/or "(al)" in some order.

Solutions

Python3

class Solution:
    def interpret(self, command: str) -> str:
        return command.replace('()', 'o').replace('(al)', 'al')

class Solution:
    def interpret(self, command: str) -> str:
        ans = []
        for i, c in enumerate(command):
            if c == 'G':
                ans.append(c)
            elif c == '(':
                ans.append('o' if command[i + 1] == ')' else 'al')
        return ''.join(ans)

Java

class Solution {
    public String interpret(String command) {
        return command.replace("()", "o").replace("(al)", "al");
    }
}

class Solution {
    public String interpret(String command) {
        StringBuilder ans = new StringBuilder();
        for (int i = 0; i < command.length(); ++i) {
            char c = command.charAt(i);
            if (c == 'G') {
                ans.append(c);
            } else if (c == '(') {
                ans.append(command.charAt(i + 1) == ')' ? "o" : "al");
            }
        }
        return ans.toString();
    }
}

C++

class Solution {
public:
    string interpret(string command) {
        while (command.find("()") != -1) command.replace(command.find("()"), 2, "o");
        while (command.find("(al)") != -1) command.replace(command.find("(al)"), 4, "al");
        return command;
    }
};

class Solution {
public:
    string interpret(string command) {
        string ans;
        for (int i = 0; i < command.size(); ++i) {
            char c = command[i];
            if (c == 'G')
                ans += c;
            else if (c == '(')
                ans += command[i + 1] == ')' ? "o" : "al";
        }
        return ans;
    }
};

Go

func interpret(command string) string {
	command = strings.ReplaceAll(command, "()", "o")
	command = strings.ReplaceAll(command, "(al)", "al")
	return command
}

func interpret(command string) string {
	ans := &strings.Builder{}
	for i, c := range command {
		if c == 'G' {
			ans.WriteRune(c)
		} else if c == '(' {
			if command[i+1] == ')' {
				ans.WriteByte('o')
			} else {
				ans.WriteString("al")
			}
		}
	}
	return ans.String()
}

TypeScript

function interpret(command: string): string {
    return command.replace(/\(\)/g, 'o').replace(/\(al\)/g, 'al');
}

function interpret(command: string): string {
    const n = command.length;
    const ans: string[] = [];
    for (let i = 0; i < n; i++) {
        const c = command[i];
        if (c === 'G') {
            ans.push(c);
        } else if (c === '(') {
            ans.push(command[i + 1] === ')' ? 'o' : 'al');
        }
    }
    return ans.join('');
}

Rust

impl Solution {
    pub fn interpret(command: String) -> String {
        command.replace("()", "o").replace("(al)", "al")
    }
}

impl Solution {
    pub fn interpret(command: String) -> String {
        let mut ans = String::new();
        let bs = command.as_bytes();
        for i in 0..bs.len() {
            if bs[i] == b'G' {
                ans.push_str("G");
            }
            if bs[i] == b'(' {
                ans.push_str({
                    if bs[i + 1] == b')' {
                        "o"
                    } else {
                        "al"
                    }
                })
            }
        }
        ans
    }
}

C

char* interpret(char* command) {
    int n = strlen(command);
    char* ans = malloc(sizeof(char) * n + 1);
    int i = 0;
    for (int j = 0; j < n; j++) {
        char c = command[j];
        if (c == 'G') {
            ans[i++] = 'G';
        } else if (c == '(') {
            if (command[j + 1] == ')') {
                ans[i++] = 'o';
            } else {
                ans[i++] = 'a';
                ans[i++] = 'l';
            }
        }
    }
    ans[i] = '\0';
    return ans;
}

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