4 files changed, 54 insertions, 0 deletions
diff --git a/challenge-193/ealvar3z/blog.txt b/challenge-193/ealvar3z/blog.txt
new file mode 100644
index 0000000000..0c39bed53d
--- /dev/null
+++ b/challenge-193/ealvar3z/blog.txt
@@ -0,0 +1 @@
+https://alvar3z.com/posts/lambdas--printf/
diff --git a/challenge-193/ealvar3z/go/ch-1.go b/challenge-193/ealvar3z/go/ch-1.go
new file mode 100644
index 0000000000..9dafd63265
--- /dev/null
+++ b/challenge-193/ealvar3z/go/ch-1.go
@@ -0,0 +1,17 @@
+package main
+
+import "fmt"
+
+func main() {
+	bitStr(2)
+	print("\n")
+	bitStr(3)
+}
+
+func bitStr(n int) {
+	limit := 1 << n
+	for i := 0; i < limit; i++ {
+		value := i
+		fmt.Printf("%.*b\n", n, value)
+	}
+}
diff --git a/challenge-193/ealvar3z/python/ch-1.py b/challenge-193/ealvar3z/python/ch-1.py
new file mode 100644
index 0000000000..54e0da742f
--- /dev/null
+++ b/challenge-193/ealvar3z/python/ch-1.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+
+
+def bit_str(n):
+    limit = 1 << n
+    for i in range(limit):
+        value = i
+        width = f'0{n}'
+        print(f'{value:{width}b}')
+
+
+if __name__ == "__main__":
+    bit_str(2)
+    print('\n')
+    bit_str(3)
diff --git a/challenge-193/ealvar3z/python/ch-2.py b/challenge-193/ealvar3z/python/ch-2.py
new file mode 100644
index 0000000000..e94157c528
--- /dev/null
+++ b/challenge-193/ealvar3z/python/ch-2.py
@@ -0,0 +1,21 @@
+#!/usr/bin/env python3
+
+
+def odd_str(_list):
+    def diff(x): return [ord(x[i]) - ord(x[i - 1]) for i in range(1, len(x))]
+    _list.sort(key=diff)
+
+    fst = _list[0]
+    snd = _list[1]
+    last = _list[-1]
+
+    return fst if diff(fst) != diff(snd) else last
+
+
+def main():
+    words = ["adc", "wzy", "abc"]
+    print(odd_str(words))
+
+
+if __name__ == "__main__":
+    exit(main())