1165. 单行键盘

class Solution:
    def calculateTime(self, keyboard: str, word: str) -> int:
        pos = {c: i for i, c in enumerate(keyboard)}
        ans = i = 0
        for c in word:
            ans += abs(pos[c] - i)
            i = pos[c]
        return ans

class Solution {
    public int calculateTime(String keyboard, String word) {
        int[] pos = new int[26];
        for (int i = 0; i < 26; ++i) {
            pos[keyboard.charAt(i) - 'a'] = i;
        }
        int ans = 0, i = 0;
        for (int k = 0; k < word.length(); ++k) {
            int j = pos[word.charAt(k) - 'a'];
            ans += Math.abs(i - j);
            i = j;
        }
        return ans;
    }
}

class Solution {
public:
    int calculateTime(string keyboard, string word) {
        int pos[26];
        for (int i = 0; i < 26; ++i) {
            pos[keyboard[i] - 'a'] = i;
        }
        int ans = 0, i = 0;
        for (char& c : word) {
            int j = pos[c - 'a'];
            ans += abs(i - j);
            i = j;
        }
        return ans;
    }
};

func calculateTime(keyboard string, word string) (ans int) {
	pos := [26]int{}
	for i, c := range keyboard {
		pos[c-'a'] = i
	}
	i := 0
	for _, c := range word {
		j := pos[c-'a']
		ans += abs(i - j)
		i = j
	}
	return
}

func abs(x int) int {
	if x < 0 {
		return -x
	}
	return x
}

function calculateTime(keyboard: string, word: string): number {
    const pos: number[] = Array(26).fill(0);
    for (let i = 0; i < 26; ++i) {
        pos[keyboard.charCodeAt(i) - 97] = i;
    }
    let ans = 0;
    let i = 0;
    for (const c of word) {
        const j = pos[c.charCodeAt(0) - 97];
        ans += Math.abs(i - j);
        i = j;
    }
    return ans;
}