refactored to reduce anti-patterns

Signed-off-by: rajput-hemant <[email protected]>

Author: rajput-hemant

Diff for: src/0101-0200/119 - Pascals Triangle II/pascals_triangle_ii.rs

@@ -6,7 +6,7 @@ impl Solution {
         // loop through the vector, starting at 1
         for i in 1..row_index {
             // loop through the vector, starting at i + 1 and going backwards
-            for j in (1..i + 1).rev() {
+            for j in (1..=i).rev() {
                 // add the value at the current index to the value at the previous index
                 row[j as usize] += row[(j - 1) as usize];
             }

Diff for: src/0401-0500/476 - Number Complement/num_complement.rs

@@ -1,6 +1,6 @@
 impl Solution {
     pub fn find_complement(num: i32) -> i32 {
-        let mut res = String::new();
+        let mut res = String::default();
 
         for ch in format!("{:b}", num).chars() {
             if ch == '0' {