The Game of Master Mind is played as follows:
The computer has four slots, and each slot will contain a ball that is red (R). yellow (Y). green (G) or blue (B). For example, the computer might have RGGB (Slot #1 is red, Slots #2 and #3 are green, Slot #4 is blue).
You, the user, are trying to guess the solution. You might, for example, guess YRGB.
When you guess the correct color for the correct slot, you get a "hit:' If you guess a color that exists but is in the wrong slot, you get a "pseudo-hit:' Note that a slot that is a hit can never count as a pseudo-hit.
For example, if the actual solution is RGBY and you guess GGRR, you have one hit and one pseudo-hit. Write a method that, given a guess and a solution, returns the number of hits and pseudo-hits.
Given a sequence of colors solution, and a guess, write a method that return the number of hits and pseudo-hit answer, where answer[0] is the number of hits and answer[1] is the number of pseudo-hit.
Example:
Input: solution="RGBY",guess="GGRR" Output: [1,1] Explanation: hit once, pseudo-hit once.
Note:
len(solution) = len(guess) = 4- There are only
"R","G","B","Y"insolutionandguess.
/**
* @param {string} solution
* @param {string} guess
* @return {number[]}
*/
var masterMind = function(solution, guess) {
let counts1 = {R: 0, G: 0, B: 0, Y: 0};
let counts2 = {R: 0, G: 0, B: 0, Y: 0};
let res1 = 0;
for (let i = 0; i < solution.length; i++) {
let s1 = solution.charAt(i), s2 = guess.charAt(i);
if (s1 == s2) {
res1++;
} else {
counts1[s1] += 1;
counts2[s2] += 1;
}
}
let res2 = ['R', 'G', 'B', 'Y'].reduce((a, c) => a + Math.min(counts1[c], counts2[c]), 0);
return [res1, res2];
};