feat: update ts solution to lcci problem: No.16.15 (#2612)

Author: thinkasany

lcci/16.15.Master Mind/README.md

@@ -108,16 +108,16 @@ var masterMind = function (solution, guess) {
     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) {
+        let s1 = solution[i],
+            s2 = guess[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);
+    let res2 = Object.keys(counts1).reduce((a, c) => a + Math.min(counts1[c], counts2[c]), 0);
     return [res1, res2];
 };
 ```

lcci/16.15.Master Mind/README_EN.md

@@ -115,16 +115,16 @@ var masterMind = function (solution, guess) {
     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) {
+        let s1 = solution[i],
+            s2 = guess[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);
+    let res2 = Object.keys(counts1).reduce((a, c) => a + Math.min(counts1[c], counts2[c]), 0);
     return [res1, res2];
 };
 ```

lcci/16.15.Master Mind/Solution.js

@@ -8,15 +8,15 @@ var masterMind = function (solution, guess) {
     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) {
+        let s1 = solution[i],
+            s2 = guess[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);
+    let res2 = Object.keys(counts1).reduce((a, c) => a + Math.min(counts1[c], counts2[c]), 0);
     return [res1, res2];
 };