JS for week 256

2 files changed, 53 insertions, 0 deletions

diff --git a/challenge-256/zapwai/javascript/ch-1.js b/challenge-256/zapwai/javascript/ch-1.js
new file mode 100644
index 0000000000..5188bd90f8
--- /dev/null
+++ b/challenge-256/zapwai/javascript/ch-1.js
@@ -0,0 +1,22 @@
+function main() {
+    let words = ["ab", "de", "ed", "bc"];
+    proc(words);
+    words = ["aa", "ba", "cd", "ed"];
+    proc(words);
+    words = ["uv", "qp", "st", "vu", "mn", "pq"];
+    proc(words);
+}
+
+function proc(words) {
+    let cnt = 0;
+    for (let i = 0; i < words.length - 1; i++) {
+	let rev = words[i].split("").reverse().join("");
+	for (let j = i + 1; j < words.length; j++) {
+	    if (words[j] == rev) { cnt++; }
+	}
+    }    
+    console.log("Input: ", words);
+    console.log("Output: ", cnt);
+}
+
+main();
diff --git a/challenge-256/zapwai/javascript/ch-2.js b/challenge-256/zapwai/javascript/ch-2.js
new file mode 100644
index 0000000000..5f4a336953
--- /dev/null
+++ b/challenge-256/zapwai/javascript/ch-2.js
@@ -0,0 +1,31 @@
+function main() {
+    str1 = "abcd", str2 = "1234";
+    proc(str1, str2);
+
+    str1 = "abcde", str2 = "123";
+    proc(str1, str2);
+
+    str1 = "abc", str2 = "12345";
+    proc(str1, str2);
+}
+
+function proc(s1, s2) {
+    let m1 = s1.split(""), m2 = s2.split("");
+    let n1 = s1.length, n2 = s2.length;
+    let ans = "";
+    let k = Math.min(n1, n2);
+    for (let i = 0; i < k; i++) {
+	ans += m1[i]+m2[i];
+    }
+    for (let i = k; i < Math.max(n1, n2); i++) {
+	if (n1 < n2) {
+	    ans += m2[i];
+	} else {
+	    ans += m1[i];
+	}
+    }
+    console.log(`Input: str1 = ${s1}, str2 = ${s2}`);
+    console.log("Output:", ans);
+}
+
+main();