1 files changed, 50 insertions, 0 deletions
diff --git a/challenge-270/zapwai/javascript/ch-1.js b/challenge-270/zapwai/javascript/ch-1.js
new file mode 100644
index 0000000000..d8b130e799
--- /dev/null
+++ b/challenge-270/zapwai/javascript/ch-1.js
@@ -0,0 +1,50 @@
+let matrix = [ [1, 0, 0],
+	       [0, 0, 1],
+	       [1, 0, 0],
+	     ];
+
+let matrix2 = [ [1, 0, 0],
+		[0, 1, 0],
+		[0, 0, 1],
+	      ];
+
+proc(matrix);
+proc(matrix2);
+
+function is_special(m, M, N, i, j) {
+    if (m[i][j] != 1) {
+	return 0;
+    }
+    for (let k = 0; k < M; k++) {
+	if (k == i) {
+	    continue;
+	}
+	if (m[k][j] != 0) {
+	    return 0;
+	}
+    }
+    for (let k = 0; k < N; k++) {
+	if (k == j) {
+	    continue;
+	}
+	if (m[i][k] != 0) {
+	    return 0;
+	}
+    }
+    return 1;
+}
+
+function proc(m) {
+    let M = m.length;
+    let N = m[0].length;
+    console.log("Input: m = ", m);
+    let cnt = 0;
+    for (let i = 0; i < M; i++) {
+	for (let j = 0; j < N; j++) {
+	    if (is_special(m, M, N, i, j)) {
+		cnt++;
+	    }
+	}
+    }
+    console.log("Output: ", cnt);
+}