2 files changed, 93 insertions, 0 deletions
diff --git a/challenge-271/zapwai/javascript/ch-1.js b/challenge-271/zapwai/javascript/ch-1.js
new file mode 100644
index 0000000000..b79e0a378f
--- /dev/null
+++ b/challenge-271/zapwai/javascript/ch-1.js
@@ -0,0 +1,39 @@
+matrix = [ [0, 1],
+	   [1, 0],
+	 ];
+proc(matrix);
+matrix = [ [0, 0, 0],
+	    [1, 0, 1],
+	  ];
+proc(matrix);
+matrix = [ [0, 0],
+	    [1, 1],
+	    [0, 0],
+	  ];
+proc(matrix);
+function proc(m) {
+    console.log( "Input: m = ", m);
+    let cnt = [];
+    for (let i = 0; i < m.length; i++) {
+	cnt.push(0);
+    }
+    let pres = 0;
+    for (let row of m) {
+	for (let entry of row) {
+	    if (entry == 1) {
+		cnt[pres]++;
+	    }
+	}
+	pres++;
+    }
+    let max = 0;
+    let max_index = 0;
+    for (let i = 0; i < cnt.length; i++) {
+	if (cnt[i] > max) {
+	    max_index = i;
+	    max = cnt[i];
+	}
+    }
+    console.log( "Output: row ", max_index + 1, " ( count is ", max, ")");
+}
+
diff --git a/challenge-271/zapwai/javascript/ch-2.js b/challenge-271/zapwai/javascript/ch-2.js
new file mode 100644
index 0000000000..7f4dc63a58
--- /dev/null
+++ b/challenge-271/zapwai/javascript/ch-2.js
@@ -0,0 +1,54 @@
+let ints = [0, 1, 2, 3, 4, 5, 6, 7, 8];
+proc(ints);
+ints = [1024, 512, 256, 128, 64];
+proc(ints);
+function proc(ints) {
+    console.log( "Input: ", ints);
+    let count = [];
+    for (let i of ints) {
+	let bin = i.toString(2);
+	let dig = bin.split("");
+	let cnt = 0;
+	for (let d of dig) {
+	    if (d == "1") {
+		cnt++;
+	    }
+	}
+	count.push(cnt);
+    }
+    let ord = ints;
+    let c = 1;
+    while (c != 0) {
+	c = 0;
+	for (let i = 0; i < ord.length - 1; i++) {
+	    if (count[i] > count[i+1]) {
+		c++;
+		let tmp_cnt = count[i];
+		let tmp_int = ord[i];
+		count[i] = count[i+1];
+		count[i+1] = tmp_cnt;
+		ord[i] = ord[i+1];
+		ord[i+1] = tmp_int;
+	    }
+	}
+    }
+    c = 1;
+    while (c != 0) {
+	c = 0;
+	for (let i = 0; i < ord.length - 1; i++) {
+	    if (count[i] != count[i+1]) {
+		continue;
+	    }
+	    if (ord[i] > ord[i+1]) {
+		c++;
+		let tmp_int = ord[i];
+		ord[i] = ord[i+1];
+		ord[i+1] = tmp_int;
+		let tmp_cnt = count[i];
+		count[i] = count[i+1];
+		count[i+1] = tmp_cnt;
+	    }
+	}
+    }
+    console.log( "Output:",ord);
+}